I am in the belief that a bullet that got to the other side of the skin and stopped there, put all its energy into the buck,
Ive heard a lot of people speak to this over the years.. but Im not sure it makes sense or is true (maybe one of the engineers could confirm/deny?)..
For the sake of argument.. if you fire a 168 grain .308 projectile at 2600 fps and it goes through the body and stops on the opposite side without exiting... and I fire a 168gr .308 projectile at 2750 fps and it is a complete pass through..
wouldnt that simply mean my projectile had more energy in the first place.. and likely distributed just as much energy into the animal as yours did.. but because mine had more energy to begin with, the bullet exited with the additional energy and continued to move until that remaining energy was expended?
And I now have the advantage of the same amount of transferred energy... AND.. two holes for bleed out..
Without being a surgeon (or an engineer for that matter).. I guess Ive never really noticed a difference in the wound channels between two similar rounds on two similar animals (assuming all other elements are also close to equal.. angle of the shot, etc).. where one round leaves the body and the other doesnt..
I get the whole temp wound channel vs permanent wound channel debate and that maybe you dont "see" where the difference would be (in the temp channel).. but that should be easy enough to dispel n(or confirm) with someone using ballistic gellatin and a high speed camera..
At the end of the day, for me, the real answer in terms of my preference is "really dont care much"... Im a pretty big fan of being well gunned for whatever the intended quarry is... and I tend to use high quality projectiles in everything I shoot that reliably open, create big holes, etc.. So.. two holes or one.. really hasnt ever mattered to me.. the only animals I have ever had to track a considerable distance before have both been in Africa.. one was shot with a bow.. the other two were less than perfect shots that would have had the same result (long tracks) regardless of 1 hole or two.. and we had some of the best trackers Ive ever seen in my life on both of those particular hunts..
Everything else I've ever shot in my life has either dropped in its tracks.. or gone less than 30 yards before expiring.. so 1 hole or 2 really hasnt been an issue..