I have never tried the 4 blade Muzzys, but have been told by some awful good hunters that they fly great. I have used 3 blade Muzzys, and 3 blade thunderheads, and they group right with my field points out to 50 yds. Never tried them any further than that. If you are grouping as good with the 4 blades, as you do with field points, I guess just changing your sights is OK. Something does`nt seem right to me, though.

NRA,UBP,BASS Member
New Stanton,PA