Energy, Momentum and Taylor KO calculator
The "Taylor Knock Out Index" was developed by John Taylor. John Talyor was an extremely experienced
African hunter. His formula was based on killing thousands of large game animals with nearly any
caliber you can imagine. This formula was designed to give you a relative
momentum figure adjusted for bullet diameter. Taylor called it a "power
yardstick" for African rifles. The higher the number the better. For example the 44 Magnum
handgun, which most handgunners consider an acceptable hunting caliber with its standard 240 grain load
at 1400 fps with a 0.429 diameter bullet gets a
Taylor KO of 20 (try that above). A fairly typical 454 Casull 300 grain handgun load gets a
Taylor KO of 30. A standard 12 gauge shotgun
slug load gets a Taylor KO of 53.
