deer1 you are not alone with the powerbelt getting a flyer in a 3@4 shot groupe.in both my m/l every 3 or 4 shot groupe there was a flyer in the groupe my 50 @ 54 cal.I switch back to the percision sabot in my 50 cal @ harvester 330 grain flat nose keith bullet in a lead sabot in my 54 cal. quess what no more flyers.said goodbye to powerbelts