ORIGINAL: Cougar Mag
Do they use rubber bands to hold the blades? Not bashing Rocket and I don't remember the model, but a buddy of mine shot through a 8 pt. this season and none of the blades opened. His model used rubber bands to keep the blades in until contact. When he retrieved his head the rubber band was still holding the blades. No vitals hit and the buck survived.
They do use rubberbands to hold the blades in place. But I shot over 20 deer with them and never had that problem. There is no way this head will not open if you hit a deer with it. Those blades fly open on impact.