Letter: B

A formed rifled slug with a wad assembly attached to its base by a screw for use in shotguns.

A component of a firearm action which usually straddles other parts and acts as a guide or support.

The wedging action of powder in the feed tube of a cartridge loading device causing stoppage of normal flow.

A term describing the shattering power of high explosives.

The chemical oxidation to color ferrous metal parts various shades of blue or black.

Tanks used to contain the solutions used for bluing of firearms.

A specific design of bullet having a tapered or truncated conical base.

1. The portion of the cartridge case which contains the propellant. 2. Shotshell – the tubular section that contains the propellant, wads and shot charge (if present).

An action in which the bolt is in line with the bore at all times; manually reciprocated using a handle attached to the bolt to load, unload and cock. There are two principle types of bolt actions: the turn bolt and the straight pull type.

Grooves or ridges on either bolt or receiver intended to maintain alignment or prevent over-rotation.