Pay no attention to MCH. He's a been known to be a little short on fore thought some days.
Sometimes you do not get enough say in where you hit them with an arrow because of flight time. Even at 15 yards and 330 FPS you are nor the sole arbiter of where it will hit.
I would consider something like a NAP Thunderhead on a Full Metal Jacket arrow. I know that after penetrating a rib and the chest to the off side shoulder joint it still had enough momentum to split the ball of the joint into 3 equal pieces and still manage 8 inches protrusion on a big doe. Whether the identical shot would produce identical results on an elk I couldn't say, but I would bet if you hit the onside ball of the shoulder joint it would split it and still make it into the chest and maybe through. That was shooting a 490 grain crossbow FMJ (with head) so you'd be reasonably comparable at 32 inch draw at 71 lbs. The arrow might well bend or wrinkle the insert area in the process and be all done, but that happens and you are not sole arbiter of that either.
By all means show me where I am wrong!
I'll also add that any arrow that I shoot at an animal or target that I consider a hard hit gets retired.
He didn't have an arrow/broad head problem. He hit the shoulder, the last thing you want to do when archery hunting. Nobody said that things can't go wrong in hunting besides making a bad shot. But clearly his mind is on finding a solution to a problem he doesn't have. His arrow and broad head both did their job!
