This information is derived from a combination of sources: manufacturer's specifications,
measuruments performed by the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI)
and approximation formulas devloped by Genitron.com.
Rankings shown here are based on a 3.75-inch pistol barrel. Rankings for guns of this caliber in our database will vary based on their actual barrel types and lengths.
In shooting competition the Power Factor is used to determine the competitive division in which a particular handgun/cartridge
can be used. It is a simple calculation of the bullet's mass times its muzzle velocity.
PF = bull. mass x muzzel vel.
TKO-Taylor Knock Out Formula
Developed by big-game hunter John Howard Taylor in the 1940's, this formula calculates the relative effectiveness of bullets for hunting game.
TKO = (bull. mass x muzzle vel. x bull. dia.)/7000
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.