how fast are you shooting with those muzzy'skodiak said:i've shot the rocky 3-blades, thunderhead 3-blades, slick trick 4-blades, muzzy 4-blades, rocket expandables, and the new G5's. i've killed animals with all but the G5's. all in 100 grains. i can shoot them all well, but i get the best arrow flight witht the new muzzy 4-blade 100's. i think most all broadheads will kill an animal, it's the best combination to get your arrow to fly like a dart and hit the mark that counts. just my opinion though! just shoot straight with whatever tip you use.