Think about what has to happen for a arrow to go into the back of a does rib cage on a slightly quartering away shot and go through her guts and come out her bellyand cut her back ankle. The only reasoning I can figure for the arrow to take that path is that the deer must have reacted when the arrow hit her. She must have jumped and twisted. I belive that has everything to do with that style of broad head I was useing at the time. A good sharp broadhead that comes to a point and cuts on impact should blow right through a doe at 38 yards as long as you don't hit any major bones.My arrow did not blow right though that doe, and given the shot placement it should have. My broadheads were sharp. However they did not come to a point. I think that slowed my arrow down and it took more effort for that broadhead to get into that deer. Which caused her reaction and my arrows reaction. So in other words. I did NOT get full penetration. If I would have then the arrow would have taken out the liver and possibly the back of the lungs and came out the other side and not came out her belly. I was maybe 12 feet off the ground, so down shot angle was not a factor. I was shooting 60-65 lbs draw weight at the time which is plenty and my arrows were 2117 xx75 shafts.Useing a good sharpbroadhead that has a good sharp point is essential.