.223, 6mm, and 6.5 failures on big game

[Bowfinn]

Work is done on the bullet to cause it to fragment. Velocity alone does not do that...

Work is done on the bullet through resistance. If the bullet meets low resistance it won’t allow the bullet to change upset and damage increased levels of tissue.

I’ll attach the equation of resistance for reference. The big take away is that velocity’s input into the equation for resistance is squared, and energy or mass is not even mentioned.