Rimfire ammunition is a type of cartridge that ignites when the firing pin strikes the rim of the cartridge case. This design makes it simpler and often less expensive to manufacture compared to centerfire ammunition. The most common caliber for rimfire cartridges is the .22 Long Rifle, widely used for target shooting and small game hunting. Rimfire cartridges typically have lower power and recoil than centerfire options, making them suitable for beginners and recreational shooters. They are often used in rifles and pistols, providing a versatile choice for various shooting activities. Popular rimfire brands include .22 Winchester Magnum Rimfire and .17 HMR.