Patent ID: 9121672
Filing Date: 2015-09-01
Classification: F41G

Abstract:
1. A ballistic effect compensating reticle for rifle sights or projectile weapon aiming systems adapted to provide a field expedient firing solution for a baseline ammunition with a selected projectile having pre-defined ballistic characteristics when fired in a pre-defined baseline set of atmospheric conditions, comprising: (a) a multiple point elevation and windage aim point field including a primary aiming mark positioned within a first horizontal crosshair aiming indicia array and indicating a primary aiming point adapted to be sighted-in at a first selected range; (b) said aim point field further comprising a first sloped array of windage aiming marks including said primary aiming mark; (c) said aim point field also including a nearly vertical array of secondary aiming marks spaced at progressively increasing incremental distances below the primary aiming point and indicating corresponding secondary elevation aiming points along a curving, nearly vertical axis intersecting the primary aiming mark, the secondary elevation aiming marks positioned to compensate for ballistic drop at preselected regular incremental ranges beyond the first selected range for the selected projectile having pre-defined ballistic characteristics; (d) said aim point field also including a second array of windage aiming marks spaced apart along a secondary non-horizontal axis intersecting a first selected secondary elevation aiming point; (e) wherein said second array of windage aiming marks includes a first windage aiming mark spaced apart to the left of said nearly vertical array of secondary aiming marks at a first windage offset or angular azimuth lateral distance from the curving nearly vertical axis selected to compensate for right-to-left crosswind at the range of said first selected secondary elevation aiming point, and a second windage aiming mark spaced apart to the right of said nearly vertical array of secondary aiming marks at said first windage offset or angular azimuth lateral distance from the curving nearly vertical axis selected to compensate for left-to-right crosswind at said range of said first selected secondary elevation aiming point; (f) wherein said first sloped array of windage aiming marks and said second array of windage aiming marks each define a sloped row of windage aiming points having a slope which is a function of the direction and velocity of said projectile's stabilizing spin or a rifle barrel's rifling twist rate and direction, thus compensating for said projectile's crosswind jump at a selected range; and (g) wherein said secondary elevation aiming points are configured with elevation indicia expressed in terms of range to a target and wherein the windage aiming marks of said first sloped array of windage aiming marks and said second array of windage aiming marks are configured for use with the pre-defined baseline set of atmospheric conditions.