Ballistic reticle for projectile weapon aiming systems and method of aiming
DCFirst Claim
1. A method of aiming a gun with a riflescope, comprising the steps of:
- (a) displaying, via the riflescope, a primary aiming mark indicating a primary aiming point;
(b) displaying, via the riflescope, a plurality of secondary aiming marks indicating secondary aiming points spaced apart below the primary aiming point along a vertical axis intersecting the primary aiming point, the primary and secondary aiming points subtending preselected angles therebetween at a first optical power of the riflescope so that the secondary aiming points are useable to compensate for ballistic drop at preselected incremental ranges beyond a first range of the primary aiming point;
(c) sighting-in the riflescope at a predetermined first range so that the primary aiming point is superposed with a nominal point of impact of a projectile shot from the gun at the first range;
(d) loading a selected ammunition into the gun;
(e) adjusting an optical power setting of the riflescope until the angles subtended by the adjacent aiming points correspond to the selected ammunition;
(f) determining an observed range to a target after sighting-in the riflescope; and
(g) aligning the gun so that a primary or secondary aiming point corresponding most closely to the observed range is superposed over a desired point of impact on the target.
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Abstract
A reticle of a projectile weapon aiming system such as a riflescope includes a primary aiming mark adapted to be sighted-in at a first selected range and further includes a plurality of secondary aiming marks spaced apart below the primary aiming mark. The secondary aiming marks are positioned to compensate for ballistic drop at preselected incremental ranges beyond the first selected range, for a selected group of ammunition having similar ballistic characteristics. Angles subtended by adjacent aiming marks of the reticle can be adjusted by changing the optical power of the riflescope, to thereby compensate for ballistic characteristics of different ammunition. In some embodiments, the reticle includes a set of windage aiming marks spaced apart along at least one secondary horizontal axis intersecting a selected one of the secondary aiming marks, to facilitate compensation for the effect of crosswinds on the trajectory of the projectile.
179 Citations
9 Claims
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1. A method of aiming a gun with a riflescope, comprising the steps of:
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(a) displaying, via the riflescope, a primary aiming mark indicating a primary aiming point; (b) displaying, via the riflescope, a plurality of secondary aiming marks indicating secondary aiming points spaced apart below the primary aiming point along a vertical axis intersecting the primary aiming point, the primary and secondary aiming points subtending preselected angles therebetween at a first optical power of the riflescope so that the secondary aiming points are useable to compensate for ballistic drop at preselected incremental ranges beyond a first range of the primary aiming point; (c) sighting-in the riflescope at a predetermined first range so that the primary aiming point is superposed with a nominal point of impact of a projectile shot from the gun at the first range; (d) loading a selected ammunition into the gun; (e) adjusting an optical power setting of the riflescope until the angles subtended by the adjacent aiming points correspond to the selected ammunition; (f) determining an observed range to a target after sighting-in the riflescope; and (g) aligning the gun so that a primary or secondary aiming point corresponding most closely to the observed range is superposed over a desired point of impact on the target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification