Would you happen to know how something like case hardening would effect a weld spot? I have 22lr that wont take an even bluing and am at a loss.there are hole welded on the receiver and will change color after a while and will have spots
took it out today run 15 rounds of win 46 gr .the first 5 holes with #s were the first shots after bore sight and adjustments the last 10 in the group