I have killed many does with my bushmaster m4a3.... Head hunt and its extremely deadly. Very very accurate. Never shot a buck with it simply because I aim for the head, and by the way out of the i wanna say six does i have killed with it only one actually didnt drop, she jumped and landed on her head about five feet away and she was done. Good way to not ruin any meat! Cant think of a more humane harvest either