Rimfire ammunition is a RIMFIRE AMMO metal cartridge whose detonator is contained within a hollow AMMO from the base of its casing. Among the most common rimfire cartridges are. 22 caliber and. 17 gauge
Rimfire ammunition is a metal cartridge that fires when it strikes the rim of a firing pin cartridge. Inside the cartridge case, the primer compound is evenly distributed around the perimeter, allowing the firing pin to strike anywhere around the edge.
How does Rimfire ammo work?
As the name implies, rimfire ammunition is a design where the primer is located on the edge of the cartridge along the edge of the rear. In these cartridges, the firing pin strikes the outer rim of the base, igniting the primer and setting the firing sequence.