I understand what your saying Arthur, and I'd have thought I'd achieve those results. But when I reset my rig for the field tip tune, my BHs group better. I shot a 6 arrow group of 8" with 125 gr. Muzzys at 70 yrds.(just playing around)3 cut the bull. That was when I put it back to my field tip tune. With the broadhead tune at 70 yrds I doubt if I would have had a 2 ft. group. The group tune for my broadheads just flat out sucked when shooting spots at anything other than the yardage I group tuned them at.