I shot a very large bull one year a little too far back with a 100 grain NAP shock wave (which open up much easier than the spitfire) broadside probably through the liver out of a 70 pound compound. I did not get a pass thru and being that the arrow didn't fully come out the other side the exit wound was plugged by the arrow and being a mechanial i doubt there was much of an entrance wound.I lost that bull even though I searched for miles and two consecutive days.

I will be the first to admit, now thatI have hind sight, the shot was too far back but still in the ribs for a liver shot and i did begin the search too soon. It was my first truely large bull and I got way too excited and began the tracking long before I should have. Having said that, had I been using a good, strong fixed blade head I have no doubt that the blood trail would have been much better with a full size entrance hole and a full size exit hole and tracking that bull would have been much easier. I did back off when i realized that he wasn't hit nearly as well as i initially thought but the blood trail was very sparce at best.

I will never use a mechanical broadhead on anything again.

I don't know what it was 13 years ago but it is 35 pounds now.