Originally posted by FrankM: I'm fairly new to this sport. I just figured out how to bareshaft tune my bow. I'm able to run 145, 175, 200 grains up front on the arrows in my sig. At each adjustable rest setting, I notice that Stu's calc is around 7 lbs. off. All I can attribute it to is my shooting style, brace height, etc. So, I'm going to bareshaft and broadhead tune for now on, and if they don't match Stu's calc exactly, that's ok.