Shot 3 deer last year with them, 2x were hard quartering away shots that took out multiple ribs as well as passing through the thin part of the shoulder blade on the far side. All came out perfect.........cleaned them up and they are actually my practice heads now. They work flawlessly. I'm not saying you will never have one fall apart, but I haven't had one do so and I can't see one coming apart without doing plenty of lethal damage in the process. The blades are thick.......