Energy, Momentum and Taylor KO calculator


Weight in grains
Speed in fps
Caliber in inches
Energy
Momentum
Taylor KO

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.



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