"Broadheads shall have a minimum weight of 100 grains. The minimum cutting diameter for any broadhead shall be 7/8 inch. Expandable broadheads shall have a minimum 7/8 inch cutting diameter prior to any expansion of the broadhead. The minimum thickness for fixed blade broadheads shall be .015 inch, and the minimum thickness for expanded broadheads shall be .025 inch."
Based on the picture of them I would say they should be for higher poundage only, the "spiral" of the blades may work for stablizing as they claim, but I have to believe it would reduce penetration by putting MUCH more drag on the blades when it starts cutting.
As far as durability goes A buddy of mine just shot a Buffalo last weekend with a Crimson Talon at 25yrds and the arrow passed through the center of aq rib and then the Broad Head was sticking out of the shoulderblade on the far side. Sounds pretty good to me?
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