The .22 Short, introduced in 1857, is one of the oldest and smallest rimfire cartridges still in production today! Originally designed for the first-ever American cartridge revolver, the Smith & Wesson Model 1, it was widely used in pocket pistols and even early Olympic shooting events due to its low recoil and quiet report.
Read more about this classic cartridge here: https://ammo.com/rimfire/22-short-ammo