• In its definition valid from circa 1870 to the present:  a small usually cylindrical packet, containing a detonating primer, a powder charge, a load---either a single projectile for a rifle or a quantity of small pellets for a shotgun---and possibly some attendant wadding. The cartridge is placed into the breech of a firearm, comprising all required consumables for the firing of the weapon.
  • A single, complete round of ammunition which includes the case, primer, powder, and bullet