This article is meant as a reference where you can turn to get answers for questions about commonly used competitive shooting terms and equipment. Check out the glossary of shooting terms in alphabetical order. Links to relevant articles are located in parentheses at the end of each entry.
Action—The group of moving parts used to load, fire and unload a gun.
Air Gun—A gun that propels a projectile (such as a pellet or BB) through its barrel by use of compressed air or carbon dioxide gas (CO2). (Link)
Aperture—The circular opening in a sighting device.
Bullseye—The round black center of a paper target, sometimes called the aiming bull or bull. Also, a term used to indicate striking the target in the highest scoring ring or 10-ring.
Butt—The portion of a gun stock that is placed against the shoulder when firing.
Buttstock—The stock of a gun to the rear of the breech mechanism.
Caliber—A measurement referring to the approximate diameter of a bullet, or the distance between the lands of a rifled barrel.
Cant—To tilt a gun inward while it is being aimed and fired.
Centerfire—A type of cartridge in which the priming compound is contained in a primer cup centrally located in the base of the case. (Link)
Cheekpiece—A raised area on the stock against which the shooter's face can fit with comfort.
Classification—A skill-level designation based on average match scores. (Link)
Click—A unit of movement in a rear sight.
Course of Fire—The number of shots at each distance and/or in each position which make up a match.