After the barrel was cleaned to bare steel, how long did it take for the velocity to settle back into previously known data? I've used CLR and iosso for a long time, but switched to clr and thoroclean in last 18 months as it seemed to not clean as aggressively and affect muzzle velocity less. Iosso would take 15-20 rounds to settle back in, Thoroclean is like 4-5. I also don't clean down to bare steel anymore, just get all the copper and fouled carbon out, still leave just a lil of the dark tint of staining in the throat. If I polish that clean it'll knock my velocity down and take a while to settle back in.
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