There is a young fella on our hunting lease that hunts with an AR10 in .308, and he kills deer quite dead, and some of his shots are made at very respectable ranges. He served a decade in the military, and hunts with the type of rifle that he is familiar with. I see no reason not to endorse the AR platform for big game hunting. Much like our forefathers did with the bolt action, after coming home from WWI.