Problem solved! Used a handheld drill, round headed bolt and some 220 grit lapping compound. I put the bolt in the drill chuck round head facing out, dipped it in lapping compound and used circular motion ensuring the bolt head found center bore and lapped a little bit at a time. The muzzle passes a qutip test and also looks good! Took her to the range and had great results though she shoots about the same as before. Lol

BEFORE:

AFTER:

RESULTS:


Two three shot groups. Had to adjust after first one but they were 1/2 MOA and .8 MOA respectively. These were SMK GMM 175s but also shot some surplus ammo groups and scored just I've MOA with those too!! Fweeeeuuuuw! I thought for sure I was going to be displeased after my lapping venture but I'm happy with the results.