I will say there is something to energy dump. I once shot a nice 3x3 blacktail with my 7mm rem mag, he was downhill more than quarterting away at about 100 yds. I placed my shot behind his ribs, which should have placed the exit wound just in front of his off shoulder. The 168gr sierra matchking @aprox 3150fps dropped him right there.
When I looked him over I could not find either an entry wound or exit wound?
When Gutting him there was no damage at all to any internal organs? his lungs, heart and liver were all intact?
After further inspection there was a blood shot line about 1" wide on the inside of his rib cage, later after skinning I found the jacket of the bullet under the hide between his neck and front shoulder. The bullet had hit all his ribs except one, it never entered the rib cage or exited. Yet he dropped on the spot. No blood loss, no hemorrhage.
Just shock I guess? I always wonder why he didn't wake up while I was gutting him out.