I was on the ground going in to hunt when a nice 6 point came up the trail towards me. He got about thirty yards quartered to me. I shot trying to avoid that shoulder bone bit I ended up hitting it absolutely square in the joint. It split the joint in three places, and continued into the deer far enough to hit the top of the heart, penetrating about 1" into the heart. He ran 20 yards and piled up. I did not get a pass through of course, and the deer was dead in short order. But the head was absolutely toast. Blade bent and curled around, and the ferrule beyond hope.
I have shot these heads into dirt, and it was sort of like having popcorn on the end of my shaft. Every time I shot one if I didn't shoot it into something soft like a Block target, they would crunch and I would have to throw them away.