cartridge case

Cartridge cases are most commonly made of brass, although steel is also widely used, and cases for shotgun pellets are made of brass and cardboard. The cases of most military rifles and machine guns have a bottleneck shape, allowing a small-calibre bullet to be fitted…

…consists of a tube (the cartridge case) with the bullet affixed at the front end, the percussion cap or primer at the base, and the propellant powder contained in the tube between. Upon being struck by the gun’s firing pin, the percussion cap detonates and ignites the propellant; the resulting…