The Definition of Group
A set of holes in a target left by a succession of bullets fired from the same rifle or handgun,
using the same ammunition and sight setting. Fired (within the limits of one's marksmanship ability)
to determine the inherent accuracy of the rifle/ammunition combination,
and to aid in the proper adjustment of the sights.
19 Other Firearms Definitions You Need To Know
Hearing protection that completely covers both ears and is usually attached to a headband.
A type of mechanism for removing a spent shell casing from the chamber of a firearm and inserting a fresh cartridge into the chamber.
This type of mechanism is most commonly used in shotguns and rimfire rifles.
The cartridge for a shotgun. It is also called a "shell," and its body is usually made of plastic (metal shotgun shells are very rare, paper shotgun shells are extinct)
with a metal head.
Small shotshells are also made for rifles and handguns and are often used for vermin control.
A felt, paper, cardboard or plastic disk that is used in a shotshell. Also in muzzle loading, a piece of cloth used to seal the bullet in the barrel. It's purpose and function is the same as a shotgun wad.
A pocketed belt for holding ammunition and cartridges. It was usually slung over the chest.
Bandoliers are now rare because most military arms use magazines which are not well-suited to being stored in such a manner.
They are, however, still commonly used with shotguns, as individual 12 gauge shells can easily be stored in traditionally designed bandoliers.
A rifle with a relatively short barrel.
Can also be spelled Over/Under, OverUnder or Over and Under.
A firearm (most commonly a shotgun) with two barrels that are vertically aligned with each other, one on top of the other.
A smooth, sometimes contoured plate, within a magazine, at the top of a spring, across which cartridges slide when being loaded into a chamber.
How the shooter positions her body while shooting. The three most widely used handgun stances are
Ammunition that has been assembled by a commercial vendor of ammunition and sold in retail stores. This is as opposed to Hand loads which have been assembled by individuals and are not typically sold.
A type of firearms magazine that is cylindrical in shape, similar to a drum.
Probably the most recognizable drum magazine is the magazine for a Thompson carbine rifle, also known as the Tommy Gun.
A pair of slender and easily-carried wooden dowels or sticks, which when held, crossed, in the fingers of the left hand while also supporting the forend of a rifle,
usually shooting offhand, provides somewhat enhanced stability for a more accurate shot.
The forward end of the bolt which supports the base of the cartridge and contains the firing pin.
The entire collection of moving parts which work together to fire the gun when the trigger is pulled.
It may include trigger springs, return springs, the trigger itself, the sear, disconnectors, and other parts.
The counter bore in the center of the base of a centerfire cartridge casing in which the primer assembly is seated.
The edge on the base of a cartridge case which stops the progress of the case into the chamber.
Short for the word Ambidextrous. Meaning that a feature of a firearms can be used by either hand, for example ambi-safety, ambi slide catch or ambi mag release.