Windage troubles at long range
I am having problems with my 7mm STW shooting 6 inches right at long ranges. Ive shot it at 400, 500,600,700 yards and it keeps shooting the same 6 right. Ive shot it again at 100 and 200 and 300 and it is right on the money. im shooting 180 berger VLD bullets at 2914fps. The gun is shooting really good groups out there just six inches right and on calm days. Scope is a markV 8.5-25 leupold, sitting on a krieger barrel and pre64 model 70 Winchester action. any help would be apprciated.