The .22 Magnum, also known as the .22 WMR (Winchester Magnum Rimfire), is a type of rimfire cartridge designed for small game hunting and target shooting. It was introduced in 1959 and is known for its higher velocity and energy compared to the standard .22 Long Rifle cartridge. This makes it effective for a variety of applications, including varmint control and recreational shooting. The .22 Magnum features a larger case and a heavier bullet, typically ranging from 30 to 50 grains. It is commonly used in rifles and revolvers, providing shooters with a flat trajectory and increased range. Its popularity has led to a wide selection of firearms chambered for this cartridge, making it a versatile choice for enthusiasts.