Wally, Haven't got the best answer for that. I've had 2 fly over 75 yards after a complete pass-through and another with an arrow stuck in him. I've used adders behind my broadheads and they really to a number on the insides of those turkeys but they're really tuff birds. I've had the best luck with avoiding a side shot and just putting an arrow straight on from the back or front to break the back and running gear down. As I said I'm still learning and drawing on those birds isn't always easy. They move alot and there's always a bunch of eyes looking at everything than moves. By the way, shot my first one years ago from a popup blind. Will never do that again. I lost so much of the enjoyment by being locked up in a tiny black spot looking out a hole. Reminds me now of so many of the hunting shows shooting from a fiberglass treehouse over a baited field at fenced deer. Sorry I rambled on, it's the old man in me!