ORIGINAL: bow_hunter44
True, the Grizzly broadhead in Dr. Ashby's study turned out to be the best of the best. The drawback to that, from my persepctive, is that the Grizzly is a glue on broadhead, as were many of the cheaper broadheads that performed better than the Silverflame.
At 3RiversArchery they sell
broadhead adaptersthat screw in and then you can glue on broadheads. They also sell heavier
steel adaptersif you want to increase your tip point weight
.