rings and bases are tight. Crown looks fine and I doubt rust as none of my other guns are experiencing a problem, although this is my only SS gun. I did find that the stock screws were a little loose when I first went looking for the problem the other day, but that was corrected and it didn't help the groups one bit.

She's getting a good cleaning right now and I'll see if that makes any difference, but I doubt it. She only had 50 or so rounds through her when she got put up and I always run a bore snake through 2X when I'm done shooting.