The deviation from the expected flight path of a bullet due to the forces of wind.
The transverse movement of a sight to compensate for the horizontal displacement of a bullet or bullets from the aiming point.
The knob on some iron and telescopic sights which is turned in either direction to adjust the horizontal setting of the notch, aperture or reticle of the sight.
A micrometer type device found on some iron and telescopic sights which allows the shooter to make precision adjustments to the horizontal setting.
A manual safety found on some bolt action rifles, usually mounted at the rear of the bolt assembly, which pivots in an arc at right angles to the bore line.
A line on each of two mating parts used to indicate proper alignment. Also known as Draw-Line or Index Mark.
A bulge or swelling in the pistol grip of a stock to fit the palm of the trigger hand. Named after inventor Louis Wundhammer.
A circle inside the highest scoring ring on a target, used to break ties in shooting matches. The shooter with the most X-Ring hits wins.
The angle between the longitudinal axis of a projectile and a line tangent to the trajectory through the center of gravity.
A heavy duty mechanical device into which chambered barrels are secured for testing ammunition.