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I cleaned it after re-assembly. Shot several mags of M80 to get back on paper. Shot some .22lr for a bit so Hornady group was cool-ish barrel. I didn't let it cool before shooting the Federal.Nice , let me ask this
1. Was the barrel cleaned well before you re tested with the hornady match?
2. Do you think the GMM would shoot better if you cleaned the barrel and shot it with a fresh barrel?
Nice to see your back on track.
I cleaned it after re-assembly. Shot several mags of M80 to get back on paper. Shot some .22lr for a bit so Hornady group was cool-ish barrel. I didn't let it cool before shooting the Federal.
Will keep testing & working on my technique.