The not so obvious here guys is when I say rock, I'm talking about a 35# rock, not a stone in the dirt. Also this rock is not flat, but rather shapely as in something you might see lining a flower bed. I have no doubt the head didn't hit at a perfectly 90 degree wall to its course, hence the bending moment. Had I hit it perfectly square, its likely the head would have been straight to the eye, but jammed 2" deeper into the arrow shaft. I used aluminum to hit the target weight I was after. This is not a slam on this broad head, and Id rather it didn't turn into that. I have full confidence in this head holding up extremely well in hunting situations. You can not compare a rock to any bone, let a lone a whitetail bone. Go to the Tusker site, he shoots several heads thru a shoulder blade and they go right thru. This rock, well, its not hurt. lol
NJloco, I'm sending you a pm later today. I use hot melt glue for my inserts, and merlite hot melt glue for the insert to broad head. I'm interested to hear your thoughts on this subject.