• Designed by John Browning and introduced by Fabrique Nationale of Belgium, this cartridge has achieved world-wide acceptance and has even been adopted as the standard pistol cartridge by several governments. One reason for the round’s success is that it is the largest practical cartridge that can be easily adapted to small automatic pocket pistols. Ballistics fall far short of even the 9mm Luger, but still prove adequate for most self-defense situations. The round has established quite a niche position in this role, often being chosen over more traditional small calibers such as the .25 and .32 Autos.