Firearms Facts Episode 4: Taylor Knockout Formula

Published on July 10, 2012
Duration: 6:56

This episode delves into the Taylor Knockout (TKO) formula as an alternative to standard foot-pounds of energy for assessing cartridge power, particularly for large game. It highlights how bullet diameter significantly impacts TKO, sometimes more than raw energy, as seen in comparisons between the .600 Nitro and 10ga Waxer. The .950 JDJ is presented as an extreme example of cartridge power, boasting immense energy and TKO values.

Quick Summary

The Taylor Knockout (TKO) formula, (Weight x Speed x Diameter) / 7,000, emphasizes bullet mass and diameter for 'brute force' power. It contrasts with standard foot-pounds of energy, showing how larger diameter bullets like the 10ga Waxer can achieve high TKO values despite lower energy.

Chapters

  1. 00:00Standard Foot-Pounds Formula Explained
  2. 00:35Introducing the Taylor Knockout Formula (TKO)
  3. 01:40Comparing Energy vs. Knockout Values
  4. 02:13The Extreme Power of the .950 JDJ
  5. 04:27John Taylor's Legacy and .375 H&H Magnum

Frequently Asked Questions

What is the standard formula for calculating foot-pounds of energy?

The factory standard formula for calculating foot-pounds of energy is (Velocity x Velocity x Bullet Weight) / 450,240. This formula is widely used to represent the kinetic energy a projectile possesses.

How is the Taylor Knockout (TKO) formula calculated?

The Taylor Knockout formula, developed by John Taylor, is calculated as (Weight of Projectile x Speed x Diameter) / 7,000. It's considered a 'brute force' measure that emphasizes bullet mass and diameter.

What is the .950 JDJ and its performance metrics?

The .950 JDJ is the world's most powerful sporting rifle round. It fires a 3,600-grain bullet at 2,200 fps, generating over 38,000 ft-lbs of energy and a TKO value of 1,075.

Why is bullet diameter important in the Taylor Knockout formula?

Bullet diameter is a key factor in the TKO formula. A larger diameter projectile, even with less raw energy, can achieve a similar or higher TKO value than a smaller projectile with more energy, as seen in the 10ga Waxer example.

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