12Ga slug
3" remington copper solids
1 oz wieght
1550fps MV
2331ft/lbs ME

@100 yards
1100fps
1597ft/lbs

If you think conservativly saying a copper solid is .6" diameter thats around TI=41.1. Not bad.

Lets do another one I have used.
remington corlok ultra
385grwieght
1900fps MV
3086ft/lbs ME

@100 yards
1648fps
2325ft/lbs

TI is 54

This is the reason I and many, many other experienced shooters have poked holes in this theory. The guy puts the dominating factor in the equation on bullet diameter and doesn't take in any effect on hydrostatic trauma. As a engineer, I don't understand this. Why did he put it there with no scaling factor. What bases is it there for. Hey the guy stuck it in the equation to get a finite number. Where the energy equation's dominating effect is velocity, and doesn't take in any effect of bullet diameter and definately not bullet construction. BUT, it is accurate and undisputed scientific equation. I know one thing for fact, I mean fact (in my head), at 100 yards, I could drop a deer like a hammer with a 30-06 compared to a 12ga slug or 50cal muzzleloader. Hands down, no comparison. I also believe, that a 12ga slug or 50cal muzzleloader would at close range, outpenetrate hands down a 30-06 in a huge animal.


For that reason, both the energy equation and the TI is both seriously flawed for using concrete numbers to say "this gun is adequate for tryanisouris or whatever". All I and all you reading can go on is personal experience and use these numbers loosely for a guideline. Classic example is the 45ACP and 357Sig.