Letter: B

1. In a firearm, any part intended to absorb shock, reduce impact or check recoil. 2. In a shotshell, any material added to the shot to prevent deformation during firing.

A chamber with an abnormal enlargement.

A localized enlargement of the barrel bore typically caused by the firing of a round into an obstruction within the barrel. If the bulge is circumferential: See Ring Bulge.

A slang term for Bullseye of Target. See Bullseye.

A firearm built with an extra-thick, heavy barrel, used primarily for target shooting or varmint hunting.

A shoulder-fired firearm in which the action is behind the fire control system.

A non-spherical projectile for use in a rifled barrel and sometimes contained within a sabot.

A process for making lead bullets by pouring molten metal into a mold.

The inner section of a jacketed bullet, usually lead.

The movement of a bullet out of the cartridge case due to the recoil of the firearm (and the inertia of the bullet) when firing another cartridge in the firearm.