Rimfire ammo is a type of ammunition that uses a primer located within the rim of the cartridge to ignite the gunpowder. Rimfire rounds are generally less powerful than centerfire rounds, but they are less expensive to produce and are often used for target practice or plinking (shooting for fun).
Common rimfire calibers include .22LR, .17HMR, and .22WMR.
Johnny Answered question June 29, 2022