Rimfire ammo is a type of ammunition that uses a rimfire cartridge. The cartridge is ignited by a spark created when the firing pin hits the rim of the cartridge. Rimfire ammo is typically less powerful than other types of ammo, but it is also cheaper to produce and more reliable in colder weather conditions. Rimfire ammo is most commonly used in pistols and rifles, but it can also be used in shotguns.
Robert Answered question June 29, 2022