This is a list of firearm cartridges which have bullets of a caliber between and . Length refers to the cartridge case length OAL refers to the overall length of the cartridge Measurements are in millimeters then inches, i.e. mm (in). Pistol cartridges Rifle cartridges .24 in (6.2 mm) .25 in (6.5 mm) .264 in (6.6 mm) and up See also .25 caliber References Pistol and rifle cartridges