I'm scratching my head alot, these days trying to figure out what I'm doing wrong. I can drive tacks at 100 yds best I ve I ever done with this rifle. I'm proud of it,but at 200 yds I have a 2in. group and at 300 yds I have a good 5 in group. I have increased powder and decrease powder. I tried seating deeper. Currently I'm using IMR 4350 @70 grains of powder.using Rem cor lokts and horandy 180 grain. bullets seated at 3.402. Does anyone have Idea what I should do?