Quote Originally Posted by JASmith View Post
It can be done as soon as you know the dimensions and materials of the fragments.

There is an alternative path based on gel and wet-newsprint tests. You will see in the references to the Ideal Bullet Weight paper that an extensive set of tests support the conclusion that penetration in game is largely independent of caliber and impact velocity when the bullet impacts within its design envelope (usually 2,000 to 3,000 fps).
So now velocity and sectional density dont matter..... so a 180gr 338 cal at 2000fps acts the same as 180gr 7mm bullet at 3000..... yea....