I used to use the thunderheads and always found the edges very sharp. I kept several dull blades for practice and switched to new for hunting. Also, I would letter the broadhead and number my arrows. When sighting in with broadheads, I make a little chart of each combination. Then I shoot a bunch, keep the groupers and try new combinations with the flyers.

Hunting is a right, treat it like a priviledge - respect nature