oil patch, I believe you are right. I have killed lots of deer over a 17 yr period with Muzzy heads and Im trying to find out about Rage, Montec, and Slick Trick heads. Im kind of old school so I don't know much about these new heads. Muzzy have not failed me, I have failed them before with poor shot placement. My friend shot a deer back in 95 with a Punch Cutter head and we never found her, the blades did not open. That cured me of Mech heads. I may change from Muzzy heads to a fixed head that flies more accuratley.