i loaded up some win 748,speer 50 grain sp,still didnt group good. loaded up same bullets with imr 3031,24.4 grains shot 6 times 2 were withing 3/4,the other 4 were just about touching each other. i dont understand how this happened, i was getting good groups with blc2,50 grain hornady,then i cleaned the barrel real good,and now it throws them all over the place.