I've shot some bad one's myself...but only in practice. I never use a head on game that I have not consistently practiced with before the hunt. I shot many heads that ripped to shreds after 15-20 shots, with blades bending and the overall integrity of the head breaking down quickly. I'm sorry I don't remember the names of the heads as that is how uneventful the heads were when I shot them. I know many of them were from Walmart