I think it's a lousy idea and probably not legal in most states. It wont take a deer down on the spot unless you make a brain or spinal cord shot, both very small targets. The ball wont pass thru and you will have to do some serious tracking. Your remark about a shot scaring game away for weeks is rubbish. I've taken deer with more than one in the field and after the shot the others run to the woods but some come back to see what happened.