cartridge (shotgun)
Piece of ammunition made up of multiple projectiles (pellets), an explosive charge and a primer, all packed inside a case.
crimping
Ridged edges of the case that are used to close the cartridge and keep the pellets inside.
pellets
Small round shotgun projectiles that are sprayed out under pressure from the wad; they are made of lead, copper or nickel.
base
Metal base of the case that contains the primer.
primer
Metal part filled with a chemical detonating substance that ignites the powder charge.
charge
Explosive substance used to drive the projectile.
wad
Piece of felt or plastic that separates the pellets from the charge; when moved by the explosion, it drives the pellets forward at high speed.
plastic case
Plastic cover containing the explosive charge and the cartridge’s projectiles (pellets).