While it has been advocated by many-a-misinformed-gun-counter commando that some sort of energy transfer occurs between a projectile and its target, this has been rejected by everyone ...
There absolutely is an energy transfer between the bullet and flesh. Anyone who has ever butchered a deer has seen the massive hemorrhaging that takes place. This damage occurs in flesh that was nowhere near the actual path of the projectile. When a bullet hits flesh, a pressure/shock wave travels through the surrounding flesh. The reason you want an expanding bullet is not so much to cut a bigger path through the body. It is to slow the bullet down more so that it imparts more of its energy into the target.
Absolutely! Thanks for posting. The shock wave of the bullet (transmitted energy) is a key element. When I was in tanks, I never let any of my Marines forward of the hull when on the firing line. The shock wave from the round coming out of the main gun can kill.