Patent ID: 8286871

Claim:
A sighting system for positioning a ballistic weapon such that a projectile leaving the weapon at a known speed will strike a target downrange, the system comprising: a bore-sight laser disposed in the projectile configured to project a laser dot downrange along an axis of the projectile, such that when the projectile is resting within the weapon, the laser dot indicates the attitude of the weapon; a housing held in adjustably fixed position relation to the weapon, including: a rangefinder to generate a target distance signal indicative of a target distance between the weapon and the target; and a memory to store a bow speed datum and a known reticule position based upon a known target distance; a processor to receive the target distance signal from the rangefinder; and a display configured to depict the reticule and an electronic aiming indicator, the electronic aiming indicator replacing the reticule on the display and being located in a shifted position corresponding to the target distance signal and the eye of a user, the processor configured to generate the shifted position in response to the target distance signal, the bow speed datum and the known reticule position, such that the user sees the electronic aiming indicator overlaid on an image of the target in the shifted position indicating an attitude of the weapon necessary for the projectile to strike the target; and a mount to hold the housing in the adjustably fixed position relation to the weapon, the adjustably fixed position being selected based upon the position of the laser dot when the projectile is resting in the weapon.