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 7.5-inch revolver 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
Introduced by Winchester, the .218 BEE was originally developed for the Model 65 lever-action rifle. Today Ruger, Marlin, Thompson/Center and Browning chamber guns for this cartridge. The cartridge design is based on a .32-20 case necked-down to .22 caliber. The larger case provides a somewhat greater powder capacity and as such, a higher velocity and greater effective range than the .22 Hornet. While still an effective cartridge, the .218 BEE has been largely displaced by the .223 Remington and .22-250 Remington.