I have shot many deer with rage BH and have never had a blade not open. I shoot the 3 blade and with my setup I dont have to change any thing on my bow. Just change from field points to BH and they shoot the same.
I will not even try a different head now that I have shot RAGE heads. You can also switch the practice head over to a hunting head if you buy extra blades, I had to and I worked great.