Letter: F

Part of a primer. See Paper Disc.

1. A shot considerably outside the normal group on a target. 2. A shot considerably outside the normal range with regards to velocity or pressure.

1. See Oil-Dent. 2. Longitudinal grooves in the sidewall of a firearm chamber. 3. See Fluted Barrel.

A chamber that has longitudinal grooves.

The bottom of a box magazine. May be hinged, sliding or immovable.

1. The impression made by the firing-pin in the primer cup of the centerfire primer or the rim of rimfire cartridges. 2. A measure of the kinetic energy delivered by the firing-pin.

The distance the firing-pin protrudes from the breech face when it is in its most forward position.

A blank cartridge that was designed for use in firearms of different calibers. It can be used in caliber 38-40, 44-40, and 45 Colt revolvers and in caliber 38-40 and 44-40 rifles.

A type of smokeless propellant in the form of thin discs or cut squares.

A muzzle attachment designed to reduce muzzle flash. Also called Flash Suppressor.