n. A type of firearm cartridge with the primer is in a central primer cap.
Word Usage
"While Remington has had better success in centerfire 22's (.222, .223 and. 22-250) and 7mm, it lost in the 6mm category (the. 25-06 doesn't count, because until the. 25WSSM, Winchester didn't have an entry in that caliber)."