Check out the samurai by Alaska bow hunting supply. It comes in a 150grn version so you don't have to screw with things "to make it work", follows every design suggestion by Dr Ashbey and in my own tests vastly out performed every stamped tin broad head tested including the Magnus, eclipse, Eskimo and no mercy. I still use magnus or zwickeys....on ducks, but for anything over 300 pounds the samurai is my broad head of choice. In fact the Magnus and the Eskimo both had rolled over tips from a drop of 3 feet onto a oak plank!