I have taken about 1/2 a dozen with 50-55# longbows and close to another dozen with 80+ pound compounds. I have only had 2 pass throughs ever. Almost all the shots have an exit, but the arrow usually stays in. I try and break the wing butt and pass into the vitals, many times breaking the off side wing as well. The ones I passed through died quickly and were easy to recover but the shots were just a little too far back for what I believe is a perfect shot. Both those shots passed through like the bird wasn't even in the way.