Abstract:
The present disclosure relates to a device for aiding marksmanship and a method of use thereof. In a particular form the present disclosure relates to a device for teaching the principle of leading a target. According to one aspect, the device comprises a base securable to a firearm, a compensating sight spaced apart from the base to at least a side of the firearm and positionally adjustable with respect to the base, wherein in use, the compensating sight is so positioned with respect to the base that when the firearm is aimed at a moving target via the compensating sight an appropriate amount of lead is applied to the target.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    The present application claims the benefit of Australian Provisional Patent Application No. 2014905148 entitled “A MARKMANSHIP AID” and filed on 19 Dec. 2014, the content of which is hereby incorporated by reference in its entirety. 
       TECHNICAL FIELD 
       [0002]    The present disclosure relates to a device for aiding marksmanship, and a method of use thereof. In a particular form the present disclosure relates to a device for teaching the principle of leading a target. 
       BACKGROUND 
       [0003]    When shooting a moving target, the shooter must, in order to hit the target, actually shoot at a distance in front of the target that will cause the shot from the firearm to intersect the trajectory of the target at the same instant that the target arrives at that point. 
         [0004]    To hit the target the shooter must apply what is commonly known as lead′; lead is the distance the shooter must shoot ahead of the target to allow for the time it takes for the shot or bullet to travel from a muzzle of the firearm to the point of intersection with the trajectory at the moment that target is at that point, and thus to hit the target. 
         [0005]    New and intermediate shooters have great difficulty estimating how much lead to give a target, as it is very difficult for them to comprehend that one must shoot so far in front of a target to hit it. This fact leads to a situation where a new or intermediate shooter can find it very difficult to hit a moving target. This provides shooters (and coaches) with a great challenge, as they struggle to give greater and greater lead to the target. This is perhaps the biggest challenge in shooting at a moving target, and is probably the biggest cause of shooter frustration. 
         [0006]    Once a shooter is coached to be able to hit a target requiring a long lead, it is difficult for the shooter to be able to reproduce that lead. That is, they hit the target but then cannot do it with consistency. This leads to great confusion and makes it difficult for the coach to be able to keep the shooter on track. 
         [0007]    It is against this background and the problems and difficulties associated therewith that the present disclosure has been developed. 
         [0008]    Certain objects and advantages of the present disclosure will become apparent from the following description, taken in connection with the accompanying drawings, wherein, by way of illustration and example, an embodiment of the present disclosure is disclosed. 
       SUMMARY 
       [0009]    According to a first aspect of the present disclosure, there is provided a device for aiding marksmanship, the device comprising a base securable to a firearm, a compensating sight spaced apart from the base to at least a side of the firearm and positionally adjustable with respect to the base, wherein in use, the compensating sight is so positioned with respect to the base (and thus a muzzle of the firearm in turn) that when the firearm is aimed at a moving target via the compensating sight an appropriate amount of lead is applied to the target. 
         [0010]    The term “target” as used herein is intended to describe any moving object, living or inanimate, at which a shooter is aiming and therefore includes game and clay targets. 
         [0011]    In one form, the base of the device is movable along, and securable with respect to, a barrel of the firearm. 
         [0012]    In one form, the base comprises a frame comprising an aperture for receiving the barrel of the firearm there-through. 
         [0013]    In one form, the base comprises a clamping means for locking a position of the base with respect to the firearm. 
         [0014]    In one form, the base may be interchangeable to accommodate firearms of distinctly different types. 
         [0015]    In one form, the compensating sight is a part of a compensating sight assembly. 
         [0016]    In one form, the compensating sight assembly comprises an adjustment means providing a lateral (i.e. sideways) movement at least, of the compensating sight relative to the barrel of the firearm. 
         [0017]    In one form, the adjustment means further provides a longitudinal (i.e. lengthwise along the barrel) movement of the compensating sight relative to the barrel of the firearm. 
         [0018]    In one form, the compensating sight assembly comprises a further adjustment means providing a normal (i.e. vertical, or up and down) movement of the compensating sight relative to the barrel of the firearm. 
         [0019]    In one form, the compensating sight assembly comprises the base, a carriage depending from the base, a wing mount depending from the carriage, a wing depending from the wing mount, and the compensating sight depending from the wing. 
         [0020]    In one form, the base comprises a normally (relative to the barrel) extending track along which the carriage is positionable. In this way, the above mentioned ‘further adjustment means’ is provided. 
         [0021]    In one form, the wing mount is pivotable with respect to the carriage, and about a longitudinal (relative to the barrel) axis. 
         [0022]    In one form, the wing is pivotable with respect to the wing mount, and about a normal (relative to the barrel) axis. In this way, the above mentioned ‘adjustment means’ is provided. 
         [0023]    In one form, the compensating sight comprises a bead. In one form, in an alternative, the compensating sight may comprise an optical or laser sight. 
         [0024]    In one form, the device comprises a compensating sight assembly to either side of the base. 
         [0025]    According to a second aspect of the present disclosure, there is provided a method for using the above described device to shoot a moving target, the method comprising the steps of setting a position of the compensating sight relative to the base based on characteristics of the target, and following the trajectory of the target while sighting the target via the compensating sight until the target is hit. 
         [0026]    A detailed description of one or more embodiments of the disclosure is provided below along with accompanying figures that illustrate by way of example the principles of the disclosure. While the disclosure is described in connection with such embodiments, it should be understood that the disclosure is not limited to any embodiment. On the contrary, the scope of the disclosure is limited only by the appended claims and the disclosure encompasses numerous alternatives, modifications and equivalents. For the purpose of example, numerous specific details are set forth in the following description in order to provide a thorough understanding of the present disclosure. 
         [0027]    The present disclosure may be practiced according to the claims without some or all of these specific details. For the purpose of clarity, technical material that is known in the technical fields related to the disclosure has not been described in detail so that the present disclosure is not unnecessarily obscured. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0028]    Embodiments of the present disclosure will be discussed with reference to the accompanying drawings wherein: 
           [0029]      FIG. 1  is a perspective view of a device for aiding marksmanship according to a first embodiment of the present disclosure; 
           [0030]      FIG. 2  is a perspective view of a base from the device of  FIG. 1 ; 
           [0031]      FIG. 3  is a plan view of the base of  FIG. 2 ; 
           [0032]      FIG. 4  is a side view of the base of  FIG. 2 ; 
           [0033]      FIG. 5  is a perspective view of a pair of carriages (comprising a left hand side carriage, and a right hand side carriage) from the device of  FIG. 1 ; 
           [0034]      FIG. 6  is a front view of the carriages of  FIG. 5 ; 
           [0035]      FIG. 7  is a plan view of the carriages of  FIG. 6 ; 
           [0036]      FIG. 8A  is a perspective view of a left hand side wing mount from the device of  FIG. 1 ; 
           [0037]      FIG. 8B  is a perspective view of an alternative embodiment of a left hand side wing mount from the device of  FIG. 1 ; 
           [0038]      FIG. 9A  is a perspective view of a right hand side wing mount from the device of  FIG. 1 ; 
           [0039]      FIG. 9B  is a perspective view of an alternative embodiment of a right hand side wing mount from the device of  FIG. 1 ; 
           [0040]      FIG. 10  is an end view of the left hand side wing mount of  FIG. 9 ; 
           [0041]      FIG. 11  is a side view of the left hand side wing mount of  FIG. 8 ; 
           [0042]      FIG. 12  is an underside view of the right hand side wing mount of  FIG. 9 ; 
           [0043]      FIG. 13  is a perspective view of a left hand side wing from the device of  FIG. 1 ; 
           [0044]      FIG. 14A  is a plan view of a dial face from the wing of  FIG. 13 ; 
           [0045]      FIG. 14B  is a plan view of an information panel comprising a dial face from  FIG. 14A  with additional information; 
           [0046]      FIG. 15  is a perspective view of a right hand side wing from the device of  FIG. 1 ; 
           [0047]      FIG. 16A  is a plan view of a dial face from the wing of  FIG. 15 ; 
           [0048]      FIG. 16B  is a plan view of an information panel comprising a dial face from  FIG. 16A  with additional information; 
           [0049]      FIG. 17  is an underside view of the wing of  FIG. 15 ; 
           [0050]      FIG. 18  is a side view of the wing of  FIG. 15 ; 
           [0051]      FIG. 19A  is a perspective view of a clamp base from the device of  FIG. 1 ; 
           [0052]      FIG. 19B  is an alternative perspective view of a clamp base from the device of  FIG. 1 ; 
           [0053]      FIG. 20  is a perspective view of a clamping screw from the device of  FIG. 1 ; 
           [0054]      FIG. 21A  is a perspective view of a movable jaw from the device of  FIG. 1 ; 
           [0055]      FIG. 21B  is an alternative perspective view of a movable jaw from the device of  FIG. 1 ; 
           [0056]      FIGS. 22 through 25  illustrate the device in use for shooting a moving target; 
           [0057]      FIGS. 26 and 27  illustrate the device in different positions along the barrel; 
           [0058]      FIG. 28  is a perspective view of a device for aiding marksmanship according to a second embodiment of the present disclosure; 
           [0059]      FIG. 29  is a perspective view of a base from the device of  FIG. 28 ; 
           [0060]      FIG. 30  is a plan view of the base of  FIG. 29 ; 
           [0061]      FIG. 31  is a side view of the base of  FIG. 29 ; 
           [0062]      FIG. 32  is a perspective view of a pair of carriages (comprising a left hand side carriage, and a right hand side carriage) from the device of  FIG. 28 ; 
           [0063]      FIG. 33  is a front view of the carriages of  FIG. 32 ; 
           [0064]      FIG. 34  is a plan view of the carriages of  FIG. 32 ; 
           [0065]      FIG. 35  is a perspective view of a left hand side wing mount from the device of  FIG. 28 ; 
           [0066]      FIG. 36  is a plan view of the left hand side wing mount of  FIG. 35 ; 
           [0067]      FIG. 37  is a perspective view of a right hand side wing mount from the device of  FIG. 28 ; 
           [0068]      FIG. 38  is an end view of the left hand side wing mount of  FIG. 35 ; 
           [0069]      FIG. 39  is a side view of the left hand side wing mount of  FIG. 35 ; 
           [0070]      FIG. 40  is an underside view of the left hand side wing mount of  FIG. 35 ; 
           [0071]      FIG. 41  is a perspective underside view of a left hand side wing mount of  FIG. 35 ; 
           [0072]      FIG. 42  is a perspective view of a left hand side wing from the device of  FIG. 28 ; 
           [0073]      FIG. 43  is a plan view of an information panel from the wing of  FIG. 42 ; 
           [0074]      FIG. 44  is a plan view of a dial face from the information panel of  FIG. 43 ; 
           [0075]      FIG. 45  is an underside view of the wing of  FIG. 42 ; 
           [0076]      FIG. 46  is a side view of the wing of  FIG. 42 ; 
           [0077]      FIG. 47  is a perspective view of a right hand side wing from the device of  FIG. 28 ; 
           [0078]      FIG. 48  is a plan view of an information panel from the wing of  FIG. 47 ; 
           [0079]      FIG. 49A  is a perspective view of a clamp base from the device of  FIG. 28 ; 
           [0080]      FIG. 49B  is an alternative perspective view of a clamp base from the device of  FIG. 28 ; 
           [0081]      FIG. 50  is a perspective view of a clamping screw from the device of  FIG. 28 ; 
           [0082]      FIG. 51A  is a perspective view of a movable jaw from the device of  FIG. 28 ; and 
           [0083]      FIG. 51B  is an alternative perspective view of a movable jaw from the device of  FIG. 28 . 
       
    
    
       [0084]    In the following description, like reference characters designate like or corresponding parts throughout the figures. 
       DESCRIPTION OF EMBODIMENTS 
       [0085]    Referring now to  FIG. 1 , there is shown a first embodiment of a device  1  for aiding marksmanship, the device comprising a base  2  which is securable to a firearm  100 , by way of the base  2  comprising a frame  4  surrounding an aperture  6  for receiving a barrel  102  of the firearm  100  there-through. 
         [0086]    The base  2  is configured for use with a barrel  102  of an over and under type shotgun  100 . It should be appreciated that the device  1  could be fitted to a rifle, or configured for use with a side by side type shotgun, or any other firearm type, by use of a base shaped for fitment to that particular firearm type. 
         [0087]    With reference to  FIGS. 1 through 4 , it can be seen that the base  2  is an assembly comprising a clamping means  7  for clamping the device  1  to the barrel  102  of the firearm  100 . This clamping means  7  comprises a clamp base  10  (see  FIGS. 19A and 19B ) which comprises a tooth portion  101  which slidably engages with a channel  11  in the frame  4  and is secured (by way of snap fit in this case) to the frame  4 , a clamping screw  12  with a handle  13  (see  FIG. 20 ) threaded through the clamping base  10 , and a movable jaw  14  (see  FIGS. 21A and 21B ) secured to an end of the clamping screw  12  so as to be driven to provide clamping force to the barrel  102  with clockwise rotation of the clamping screw  12 , and outwards with counter-clockwise rotation of the clamping screw  12  to release the barrel  102 . Alignment pins  141  insert into guide holes  108  (shown in  FIG. 19A ) to guide movement of the movable jaw  14  relative to the clamping base  10 . 
         [0088]    The open U-shape of the frame  4  allows for it to be installed on the barrel  102  of the firearm  100  by sliding each side  16  over either side of the barrel  102  and then installing the clamping means  7  to clamp the device  1  to the barrel  102 . The device  1  can thereby be easily attached to a barrel  102  without sliding the assembled device  1  over a front sight. 
         [0089]    The frame  4  comprises a pair of spaced apart and parallel sides  16 , a top portion  161  with a centre guide  162 , wherein in use, one side  16  extends to either side of the barrel. Outwardly, each frame side  16  comprises a track  18 , and a gear rack  19  extending along the track  18 , along which a carriage  30  of a compensating sight assembly  20  will run, to enable what will, in use, be mainly a normal (or mainly vertical) adjustment in the position of the compensating sight assembly  20  relative to the base  2 . 
         [0090]    Each compensating sight assembly  20  comprises a carriage  30 , a wing mount  40  depending from the carriage  30 , a wing  50  depending from the wing mount  40 , and a compensating sight  54  depending from the wing  50 . 
         [0091]    With reference to  FIGS. 5 through 7 , it can be seen that each carriage  30  comprises a body comprising a slot  32  for receiving the track  18  of the frame  4 , and defining a socket  34  with two cantilever teeth  38 , the purpose of which will be discussed below. 
         [0092]    From a floor of the slot  32  there depends a cantilever tooth  37  having a tip which will run against the gear rack  19  on the frame  4 , to provide a detent for mechanically resisting unintended movement of the carriage  30 , and for dividing this movement into discrete increments. 
         [0093]    The wing mount  40  (see  FIGS. 8A through 12 ), is pivotably mounted to the carriage  30  by pivot pins  36  provided in the socket  34  of the carriage  30 . The pivot pins engage with a snap fit in pivot mounts  42 , for rotation about an axis parallel to a longitudinal axis of the barrel  102 , so that the wing  50  may be swung up and down. 
         [0094]    With reference to  FIGS. 8A through 12 , it can be seen that each wing mount  40  comprises a circular platform  44  having an upper side  442 , and an underside  444 , and further comprising a pair of gear segments  46  extending from the underside  444  of the platform  44  for insertion into the carriage socket  34 . 
         [0095]    Each gear segment  46  comprises a plurality of gear teeth  462  which will, in use, run against a tip of a cantilever tooth  38  which depends from the carriage  30  and is located in the socket  34 , to provide a detent for mechanically resisting unintended rotation of the wing mount  40 , and dividing this rotation into discrete increments. In alternative embodiments, the carriage  30  comprises a single cantilever tooth or more than one cantilever tooth. 
         [0096]    From each wing mount  40  there depends a wing  50  (see  FIGS. 13 through 18 ), which is generally elongate, with opposing first and second ends  511  and  512 , an upper surface  513  and a lower surface  514 . From the proximal underside of the wing  50  (i.e. near first end  511  on the lower surface  514 ) there depends a pivot pin  52  for insertion with a snap-fit in a pivot mount  48  provided in an upper side of the wing mount  40  to enable what will, in use, be a rotation of the wing  50  about a normal axis. From the distal upper side of the wing (i.e. near second end  512  on the upper surface  513 ) there depends the compensating sight  54  in the form of a bead (hereinafter ‘the compensating bead’). 
         [0097]    From the medial underside of the wing  50  (i.e. in the lower surface  514 ) further depends a cantilever tooth  56  having a tip which will run against a gear rack  49  provided in the underside of platform  44  of the wing mount  40 , and which extends concentrically around the pivot mount  48 , to provide a detent for mechanically resisting unintended rotation of the wing  50 , and dividing this rotation into discrete increments. 
         [0098]    Carried on the proximal upper side of each wing (i.e. near first end  511  on the upper surface  513 ) there is an indicating dial  60  (shown in  FIGS. 14A and 16A  for the left and right wing, respectively), which will, in use, indicate the angle of the wing  50  relative to the wing mount  40 . In some embodiments, a central axis of indicating dial  60  is substantially in line with a central axis of the pivot pin  52 .  FIG. 14B  shows left wing information panel  601  comprising an indicating dial  60  from  FIG. 14A .  FIG. 16B  shows right wing information panel  602  comprising an indicating dial  60  from  FIG. 16A . The information panel  601  provides information about the “standard” settings for a target that is 30 metres away from the shooter and travelling at approximately 72-78 kilometres per hour (kph), where the compensating bead  54  should be 33 mm from the centre of the gun sight. The information panel  602  provides information about the settings for targets travelling at different angles relative to the shooter and for fast moving targets. In the illustrated embodiment, information is provided for targets with an approach angle of 30, 60 or 90 degrees. For example, an angle of 90 degrees indicates that the target is travelling perpendicular to the shooter (i.e. perpendicular relative to the path of the bullet with the intersection at the point of impact) as shown in  FIG. 22  which is described below, whereas if the the approach angle was 30 degrees (i.e. relative to the path of the bullet with the intersection at the point of impact) it would indicate that the target was approaching the shooter from behind and moving away from them as the target passed by. 
         [0099]    Referring now to  FIGS. 28 through 51B , there is shown a second embodiment of device  1  for aiding marksmanship. The device of the second embodiment is structurally and functionally similar to the device of the first embodiment, unless otherwise indicated in the description or apparent from the drawings. 
         [0100]    Outwardly, each frame side  16  comprises a track  18 , and a gear rack  19  extending along the track  18 , along which a carriage  30  of a compensating sight assembly  20  will run. The device of the second embodiment differs from the first embodiment in that the gear rack  19  is of a greater length to provide greater adjustment of the carriage  30 . Outwardly, each frame side  16  comprises a stud  9 , which may provide a stop to the movement of the carriage  30  along the track  18 . 
         [0101]    Alignment pins  141  on moveable jaw  14  (shown in  FIGS. 51A and 51B ) insert into guide holes  108  in clamping base  10  (shown in  FIG. 49A ) to guide movement of the movable jaw  14  relative to the clamping base  10 . 
         [0102]    Carried on the proximal upper side of the left wing is information panel  6010  and on the right wing is information panel  6020  (shown in  FIGS. 43 and 48 , respectively), each information panel comprises an indicating dial  60  (shown in  FIG. 44  for the left wing only), which will, in use, indicate the angle of the wing  50  relative to the wing mount  40 . The information panel  6010  provides similar information to information panel  601  about the “standard” settings for a target that is 30 metres away from the shooter and travelling at approximately 72-78 kilometres per hour (kph), with the difference being that compensating bead  54  should be 36 mm from the centre of the gun sight. The information panel  6020  provides similar information to information panel  602  about the settings for targets travelling at different angles relative to the shooter or for fast moving targets, with the differences being the listed distances that the compensating bead will be from the centre of the gun sight for a given target. These differences in the distance of the compensating bead from the centre of the gun sight between the first and second embodiments are detailed further below. 
         [0103]    The slidable movement of the carriage  30  relative to the frame  4 , the pivotable movement of the wing mount  40  relative to the carriage  30  and the pivotable movement of the wing  50  relative to the wing mount  40  allow the shooter to adjust the lead to account for variables such as the distance from the target, the speed of the target and the trajectory of the target. To assist with setting the device  1  to account for a target, the frame  4  comprises markings  21  on each side  16  as a reference for the position of the carriage  30 , each carriage  30  comprises markings  22  as a reference for the angle of the wing mount  40  and wing  50 , and finally each wing mount  40  comprises pointers  232  and  233  and a quadrant of graduations  234  which align with a quadrant of graduations  242  and  243  and pointer  244 , respectively, as a reference for the distance of the compensating bead  54  from the centre of the gun sight. 
         [0104]    The markings  21  on the frame  4  provide guidance as to the appropriate adjustment of the carriage  30  relative to the frame  4  for a target with a 15 degree fall  212 , a level target  213 , a 15 degree rise  214 , a 30 degree rise  215  and a 44 degree rise  216 . The frame  4  of the second embodiment also comprises marking  211  to provide adjustment for a target with a 30 degree fall. In alternative embodiments, the frame  4  provides adjustment for targets with greater degrees of either one or both of rise and fall. The gear rack  19  comprises gears  191  which provide for fine adjustment between the markings  21 . The markings  22  on the carriage  30  provide guidance as to the appropriate adjustment of the wing mount  40  relative to the carriage  30  for a target with a 15 degree fall  222 , a level target  223 , a 15 degree rise  224 , a 30 degree rise  225  and a 44 degree rise  226 . The carriage  30  of the second embodiment also comprises marking  221  to provide adjustment for a target with a 30 degree fall. In alternative embodiments, the carriage provides adjustment for targets with greater degrees of either one or both of rise and fall. In other non-illustrated embodiments, the markings  22  are through holes and an indicator on the wing mount  40  is visible through the appropriate hole according to the adjustment of the wing mount, for example, through hole  222  appears coloured or illuminated when selected. 
         [0105]    The pointers and graduations on each indicating dial  60  and on each wing mount  40  indicate the distance of the compensating bead  54  from the centre of the gun sight. The graduations are in degrees and indicate the distance in millimetres (mm). Due to the structural differences between the first embodiment shown in  FIGS. 1 to 21B  and the second embodiment shown in  FIGS. 28 to 51B , the distance of the compensating bead  54  from the centre of the gun sight will be different in order to provide the appropriate lead for the same target. However, the similarities between the pointers and graduations mean that in use the first and second embodiments are functionally equivalent and corresponding reference characters will be used. For 30 or 15 degree falling target, a level target or a 15 degree rising target, a pointer  232  on the wing mount aligns within a quadrant of graduations  242  on the indicating dial  60 . For the first embodiment, alignment of the pointer  232  with the graduation  611  places the compensating bead 11 mm from the centre of the gun sight and the other graduations have the following meaning:  612  (22 mm),  613  (33 mm),  614  (44 mm),  615  (55 mm). For the second embodiment, alignment of the pointer  232  with the graduation  611  places the compensating bead 12 mm from the centre of the gun sight and the other graduations have the following meaning:  612  (24 mm),  613  (36 mm),  614  (48 mm),  615  (60 mm). Use of graduation  613  may be particularly suitable for a target that is 30 metres away from the shooter and travelling at approximately 72-78 kilometres per hour (kph). Adjustments can be made to the device to account for variations in the distance of the target from the shooter and for targets travelling at different speeds or different angles relative to the shooter, as appropriate. The wing may also be adjusted relative to the wing mount at finer increments than indicated by graduations  611 ,  612 ,  613 ,  614  and  615  (or any other graduations), which is provided by cantilever tooth  56  running against gear rack  49 . In alternative embodiments, the wing provides adjustment for placing the compensating bead greater than 55 mm for the first embodiment or 60 mm for the second embodiment from the centre of the gun sight to account for a fast moving target. 
         [0106]    For the first embodiment, for a 30 degree rising target, the pointer  233  on the wing mount aligns within the quadrant of graduations  243  on the indicating dial  60  and the graduations have the following meaning:  711  (11 mm),  712  (22 mm),  713  (33 mm),  714  (44 mm),  715  (55 mm). For the second embodiment, for a 30 degree rising target, the pointer  233  on the wing mount aligns within the quadrant of graduations  243  on the indicating dial  60  and the graduations have the following meaning:  711  (12 mm),  712  (24 mm),  713  (36 mm),  714  (48 mm),  715  (60 mm). 
         [0107]    For the first embodiment, for a 44 degree rising target, the pointer  244  on the indicating dial  60  aligns within the quadrant of graduations  234  on the wing mount and the graduations have the following meaning:  811  (11 mm),  812  (22 mm),  813  (33 mm),  814  (44 mm),  815  (55 mm). For the second embodiment, for a 44 degree rising target, the pointer  244  on the indicating dial  60  aligns within the quadrant of graduations  234  on the wing mount and the graduations have the following meaning:  811  (12 mm),  812  (24 mm),  813  (36 mm),  814  (48 mm),  815  (60 mm). 
         [0108]    The pointers  232 ,  233 ,  244  and graduation  813  may be any suitable shape that indicates the position of the wing relative to the wing mount, for example, triangular, as shown in  FIGS. 35 to 37  or rectangular, as shown in  FIGS. 8A and 9A . 
         [0109]    In use, each of the carriage  30 , the wing mount  40  and the wing  50  are adjusted together to account for the distance, speed and trajectory of the target. The markings may be colour coded, where a colour indicates which settings are appropriate for the particular target. For example, each of markings  212 ,  222 , pointer  232  and quadrant of graduations  242  may be the colour red. When in use, for a 15 degree falling target, the carriage  30  is set (i.e. slid) to align indicator  301  with marking  212  on the frame  4 , the wing mount is set (i.e. tilted) in line with an imaginary line drawn between marking  220  and marking  222  on the carriage  30 , and the wing  50  is adjusted (i.e. rotated) so that the pointer  232  on the wing mount aligns within the quadrant of graduations  242  on the indicating dial  60 . The wing  50  may then be rotated relative to the wing mount  40  to align the pointer  232  to the appropriate graduation within the quadrant of graduations  242  according to the nature of the target. For example, for a target with an approach angle of 30 degrees, the pointer  232  aligns with graduation  611  which places the compensating bead 12 mm from the centre of the gun sight. For a target with greater approach angle (i.e. 60 or 90 degrees) or a faster moving target, the wing would be pivoted to place the compensating bead  54  further from the centre of the gun sight. 
         [0110]    For a level target, markings  213  and  223  are selected and the wing  50  is adjusted so that the pointer  232  on the wing mount aligns within the quadrant of graduations  242  on the indicating dial  60 . The wing  50  may then be rotated relative to the wing mount  40  to align the pointer  232  to the appropriate graduation within the quadrant of graduations  242  according to the nature of the target. 
         [0111]    For a 15 degree rising target, markings  214  and  224  are selected and the wing  50  is adjusted so that the pointer  232  on the wing mount aligns within the quadrant of graduations  242  on the indicating dial  60 . The wing  50  may then be rotated relative to the wing mount  40  to align the pointer  232  to the appropriate graduation within the quadrant of graduations  242  according to the nature of the target. 
         [0112]    For a 30 degree rising target, markings  215  and  225  are selected and the wing  50  is adjusted so that the pointer  233  on the wing mount aligns within the quadrant of graduations  243  on the indicating dial  60 . The wing  50  may then be rotated relative to the wing mount  40  to align the pointer  233  to the appropriate graduation within the quadrant of graduations  243  according to the nature of the target. 
         [0113]    For a 44 degree rising target, markings  216  and  226  are selected and the wing  50  is adjusted so that the pointer  244  on the indicating dial  60  aligns within the quadrant of graduations  234  on the wing mount. The wing  50  may then be rotated relative to the wing mount  50  to align the pointer  244  to the appropriate graduation within the quadrant of graduations  234  according to the nature of the target. 
         [0114]    Using the device of the second embodiment, for a 30 degree falling target, markings  211  and  221  are selected and the wing  50  is adjusted so that the pointer  232  on the wing mount aligns within the quadrant of graduations  242  on the indicating dial  60 . The wing  50  may then be rotated relative to the wing mount  40  to align the pointer  232  to the appropriate graduation within the quadrant of graduations  242  according to the nature of the target. 
         [0115]    Referring now to  FIG. 22 , where, in use, the device  1  fits over the end of the barrel  102  of a firearm  100 , and is secured in a position close to a muzzle M using the clamping means. The wings  50  on each side of the barrel(s)  102  allow the shooter or the coach to establish the correct lead at any given distance/target speed combination by creating a ‘sight picture’ that shows the shooter the correct amount and type of lead (i.e. how far in front and how far above or below the target the muzzle M of the firearm  100  must be when the shooter pulls the trigger—and of course follows through). 
         [0116]    The adjustability of each compensating sight assembly  20  means the shooter or coach can ‘set the lead’, by setting the position of the compensating bead  54 . That is, provide a visual cue as to the amount and type of lead that the shooter needs to apply to place his or her shot so it intersects the trajectory of the particular target T. For example, the coach can instruct the shooter and provide a cue to shoot “to the left of a target” as shown in  FIG. 22 . 
         [0117]    Further adjustment can be achieved by moving the device  1  along the barrel(s)  102  of the firearm  100  as shown in  FIGS. 26 and 27 . More particularly, by increasing the distance of the device  1  from the muzzle M, greater amounts of lead can be applied. In some embodiments, the device is placed between about 300 mm and about 1300 mm from the eye of the shooter, for example, approximately 700 mm. 
         [0118]    With reference to  FIG. 22 , it can be seen that the device  1  has been set for the maximum lead on a crossing target. This setting would provide 2.5 m lead at 30 m. The wing  50  has been fully extended to the right (i.e. the pointer  232  aligns with graduation  615  to place the compensating bead 60 mm from the centre of the gun sight), the carriage  30  is set to marking  213  and the wing mount  40  is set to marking  223  which provide a level or horizontal shooting plane. 
         [0119]    This target presentation is a difficult one for a beginning shooter, because the beginning shooter is being asked to shoot so far in front of the target T. Coaches often find themselves instructing the beginning shooter to, “miss in front and follow through on the trajectory of the target”. The device  1  provides a visual cue or guide for the shooter to do this. 
         [0120]    By adjusting the wing  50  the compensating bead  54  can be moved closer to the barrel  102  of the firearm, which will produce a setting for a quartering target or a target that is slower and or closer. In these situations less lead is required and the device  1  is able to be adjusted to provide the shooter with a visual cue to the amount of lead required, no matter what the target T trajectory or speed. 
         [0121]    In  FIG. 23 , the device  1  is set to provide lead to a falling and crossing target T, again the instruction to the shooter is to place the target T above the compensating bead  54  and while moving the firearm  100  pull the trigger and then follow through on the trajectory of the target T. By doing this the shooter will be applying a ‘collapsing lead’ where the target ‘collapses’ or falls down toward the muzzle of the firearm  100 . The device is set with the wing fully extended to the right (i.e. the pointer  232  aligns with graduation  615  to place the compensating bead 60 mm from the centre of the gun sight), the carriage  30  is set to marking  212  and the wing mount  40  is set to marking  222 , which provide for a crossing target and a 15 degree fall. 
         [0122]    In  FIG. 24 , the device has been set to indicate the lead necessary in the case of a target T that is only just moving and commencing to fall, such as a chondel or high incoming target. Very little lead is necessary as the target T is stalling in the vertical plane and only just starting to fall but still has some (in this case) right to left movement. This target T can be at long range (over 40 m) which often induces in the shooter the strong inclination to see a bigger lead than is really needed. This presentation is often ‘over shot’, i.e. given much too much lead. The instruction to the shooter is to ‘shoot just under and just to the left of the target’. This is achieved by setting the device with the wing close to the barrel (i.e. the pointer  232  aligns around graduation  611  or  612  to place the compensating bead approximately 12 to 24 mm from the centre of the gun sight) the carriage  30  is set to marking  212  (alternatively marking  213 ) and the wing mount is set to marking  222  (alternatively marking  223 ). 
         [0123]    In  FIG. 25 , the target T presented is climbing and quartering slightly right to left (quartering springer). The shooter needs to shoot above and to the left of the target T. The coach has set the carriage  30  at its lowest setting (i.e. marking  216 ), has rotated the wing mount  40  downwards (i.e. marking  226 ) and the wing is set so that the pointer  244  aligns around graduation  813 , to produce an extreme setting that will place the shot above and to the left of the target T. Again the instruction to the shooter will be to place the target T above the compensating bead  54 , pull the trigger and follow through on the trajectory of the target. At any given distance/target speed combination, the correct lead can be established by moving the firearm  100  so that the target T can be seen above the compensating bead  54  and then firing and following through on the trajectory of the target T, thus keeping the target T above compensating bead  54  until the target T is hit. 
         [0124]    A shooter who is unsure of the amount of lead that should be applied to a given target T can experiment with the device  1  until they find the correct lead. The shooter can make a first estimate of lead and adjust the wing  50  to provide that lead. If the target is missed, then the shooter can increase or decrease the lead by adjusting the wing  50 . Without the device  1 , the shooter in this situation can only guess about how much more or less lead they are actually applying. The device  1  allows them to see whether or not they are actually applying more or less lead as it provides them with a constant point of reference. Once the shooter is able to consistently hit the target, the device  1  can be removed. 
         [0125]    A shooting coach can employ the device  1  to instruct a student. Before going onto the range the coach is able to set various ‘lead pictures’ for the student. Once the device  1  is fitted to the students firearm and the ‘lead picture’ is set, the coach can use a laser pointer to simulate a moving target and have the student execute their shooting movement; in so doing the student is able to see a simulated lead that enables them to become aware of just how far in front of a target T they need to be to break it. This cuts down the time and cost of acquiring the knowledge necessary to break a moving target T. 
         [0126]    When shooting in the field, the coach can fit the device  1  to the shooter&#39;s firearm  100  and adjust the wing  50  and carriage  30  to provide a lead picture for the student. This is particularly useful when the student is tackling a new type of target trajectory or if they ‘lose’ a sight picture and start to miss a target T they have previously been hitting. This greatly speeds up the coaching process. 
         [0127]    It should be apparent from all of the above therefore, that the device  1  according to the present disclosure accelerates the process of training a shooter to lead a moving target T, reducing the cost associated with coaching time and ammunition, and reducing shooter frustration. 
         [0128]    Throughout the specification and the claims that follow, unless the context requires otherwise, the words “comprise” and “include” and variations such as “comprising” and “including” will be understood to imply the inclusion of a stated integer or group of integers, but not the exclusion of any other integer or group of integers. 
         [0129]    The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement of any form of suggestion that such prior art forms part of the common general knowledge. 
         [0130]    It will be appreciated by those skilled in the art that the disclosure is not restricted in its use to the particular application described. Neither is the present disclosure restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that the disclosure is not limited to the embodiment or embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the scope of the disclosure as set forth and defined by the following claims.