"As far as the bullet itself possessing some form of engery to dump into the animal, I disagree.
This bullet, this vessel, has momentum based upon velocity and speed and therefore poessesses some abiltiy to penetrate and in the high speed expanding type, disrupts the tissues in relation to it's diameter and violence of expansion."

Momentum is a component of energy or potential work.

Momentum is a calculation based on velocity and bullet weight.

Energy is also, though since velocity is squared in the energy calculation energy favors velocity over bullet weight.

Both are measures of potential work.

So a bullet has its own energy, or potential for work, anytime it is moving. Same thing with momentum. They are two different measures of the potential for work with one emphasizing weight (or at least not de-emphacizing it) and the other velocity.

So a moving bullet has it own independent energy to dump into an animal; it also has it own independent momentum to transfer... Two sides of a coin.

JPK