In 2024, Winchester Ammunition did something not often done in the ammunition world: introduce a new rimfire cartridge. To boot, the company's new .21 Sharp design was based on one of the most ...

My first rimfire was a gift from my father ... same as the case—with a stem of lesser caliber extending into the case. The .44 Special and .38 S&W are other examples of cartridges which use heeled ...