Key words for this film....ENTERTAINMENT I'm pretty sure if you saw the Canadian sniper shooting a 16x scoped Tac 50. at the distance we've heard about you'd call bullsh!t too. Some of the other stuff coming out of Iraq is pretty hard to believe too but since they're not filming it somehow it's more believeable. Again, ENTERTAINMENT. I've never shot someone with a 50cal but I've seen the damage done on a thick skinned deer and I'm not sure humans would be able to hold it all together but again, it all depends on the ammo used to do the job.
If a human would react to a 50 hit like a badger reacts to a 338LM, it wouldn't be pretty to watch. That's just my thought.