Rimfire refers to a type of firearm cartridge that ignites when struck on the rim of the casing. This design is commonly used in small-caliber ammunition, such as the popular .22 LR (Long Rifle). Rimfire cartridges are typically less powerful than centerfire cartridges, making them ideal for target shooting, small game hunting, and training. The rimfire mechanism is simpler and cheaper to produce, which contributes to the widespread use of rimfire firearms. Many rifles and pistols are designed specifically for rimfire ammunition, offering a variety of options for shooters. Popular rimfire firearms include the .22 caliber rifle and the .22 pistol.