Rimfire ammunition is a type of cartridge that uses a small metal “rim” at the base of the casing to ignite the primer. The majority of rimfire cartridges are .22 caliber, making them popular for target practice and plinking. Rimfire cartridges are generally less expensive than centerfire cartridges, making them a good option for budget-conscious shooters.
Natalee Edited answer June 29, 2022