HI guys, new to the forum. Having an issue with a .243. I have one that is sighted in and shoots great. The second, not so much. Went out last night and tried to sight it in. 1st round center of the target, rounds 2 and 3 are 6 inches high and to the left. Did this consistently several times. After an hour, I checked the forward grip screw, factory base, and rings and al were tight. We then decided to go home. Changed scopes from Nikon buckmaster to Cabela's premium Alaskan guide as possibly a scope issue. Touqued each ring in an alternating pattern and not too tight. This morning, tried it again. At 100, one shot centered, rounds 2 & 3 are 5 inches to the right. Repeated this issue twice. It's going to be the gun, but any thoughts? The gun has been sitting for several years, so I am currently powder solving and copper removing on the barrel. It was extremely dirty.
Thanks,
Doyle