couple things i've done ,,first if you are reloading ,,start with min.charges and work up. when reloading,,,speed don't kill....accuracy does.like the others said ,,check for scope ring base looseness,,ring looseness.also when adjusting th elevation and windage ,i tap a couple time on the front and rear bell to make sure the crosshairs are settled..once i had a scope that i was zeroing in and even though i moved the clicks 6 to 8 points the crosshairs was'nt moving until i fired the gun and then i'd have to set the adjustments again ,they again did'nt move until i fired the rifle..wasted 2 boxes of shell b4 i figured out what was goin' on..so ,now i tap'e everytime..give it a try..... good luck gettin' it right