have you scrubbed the bore? After getting the copper out, retorque the stock. tighten both screws to about 5 inlbs. Then stand the rifle on its buttpad and pop it on the ground to make sure the recoil lug is back against the stock. Then tighten the front screw down about 40inlbs and then the rear about the same. Shoot some groups loosening the rear screw until groups tighten up. Everyone does this differently but this seems to work for me
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