I will say that concave heads are tougher to sharpen, but I think they’re more deadly, leave better blood trails, and fly better than traditional broadheads. Here’s a video showing how to do it the right way. I tried with the simmons steelmaster and it works about as well as this. Give it a look see. It’ll work for any broadhead.

ps- this guy kills 10-12 deer per year in GA with tree sharks and interceptors. His results are unreal.