.25 Automatic
This cartridge was introduced in the United States in 1908 with the Browning-designed Colt-manufactured .25 Vest Pocket Automatic pistol. It had been introduced in Europe a few years earlier in the FN Baby Browning, which is practically identical to the Colt. The design of these two pistols has been copied by manufacturers all over the world. Dozens of different pistols have used this cartridge. American Arms, Beretta, Iver Johnson, Jennings, Lorcin, Phoenix Arms, Sundance, Taurus, Ortgies, Astra, Star, Kelt-Tech, Rohrbaugh, and Walther have all made pistols in this chambering. The .25 Automatic offers surprising velocity for such a small cartridge. However, delivered energy is quite modest. This, combined with the full metal jacketed bullet of the conventional load, adds up to very poor stopping or killing power on…