i never used them. the way i see it i would end up practicing with a REAL BH anyways just to make sure and see for myself..every bow and arrow is diffrent...your may all fly true but maybe my setup wont...something i wouldnt wanna chance...so i elect one broadhead as my practice head and use that while practicing. kinda stinks walkin to the target after the shot...but by the time im practicing soley with broadheads im also practicing for the real thing and trying to practice realistically. shooting only a couple arrows a day...shooting from the tree, in the woods, kneeling on the ground, angles etc...