I didn't like these broadheads from they day my dad bought them from the simple fact that the 2 fixed blades are intentionally bent. I just don't see how this could make it fly right, especially with helical fletch. Well today we put on a little deer drive and my dad hit a 7 pointer a little high at 15 yards. We found the arrow which blew through the animal. It didn't expand. I've used Shockwaves and Spitfires and have never had a problem. First shot with these junky broadheads and they didn't open up. Normally the arrow would have been covered in thick red blood where he hit, but it looked like it had been shot with a field point on it. I would avoid these at all costs.