.38 Special (.38 Smith & Wesson Special) Handgun Cartridges

Developed by Smith & Wesson and introduced along with its Military & Police Model revolver in 1902, this was originally a military cartridge intended to replace the unsatisfactory .38 Long Colt then in use by the Army. Colt brought out its own version of the .38 Special in 1909, which differs from the original only in bullet shape, being a flat-point style. The .38 Special is considered one of the best-balanced, all-round handgun cartridges ever designed. It is also one of the most accurate and very widely used for match shooting.

.38 Special (.38 Smith & Wesson Special)

**See below for further reference regarding the power rankings listed in the tables above:

MV-Muzzle Velocity
Muzzle velocity when fired from a typical handgun. Measured in feet-per-second.

ME-Muzzle Energy
Muzzle energy when fired from a typical handgun. Measured in foot-pounds.

PF-Power Factor
In shooting competition the Power Factor is used to determine the competitive division in which a particular handgun/cartridge can be used. A simple calculation of the bullet's mass times its muzzle velocity.
PF = bull. mass x muzzle vel.

TKO-Taylor Knock Out Formula
Developed by big-game hunter John Howard Taylor in the 1940's. Calculates the relative effectiveness of bullets for hunting game.
TKO = (bull. mass x muzzle vel. x bull. dia.)/7000