** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Eric Oberdorf My son asked me if ...

Rimfire and centerfire show up in gun shop and range talk, but their names hide a simple idea: where the firing pin strikes the cartridge. In a rimfire round the primer is inside the rim, so the gun ...

All modern metallic cartridges consist of a brass case that contains gunpowder capped off with a bullet. Rimfire and centerfire cartridges are both metallic cartridges; the difference is in how they ...