I have a Parker that was pitted when I got it and it doesn't seem to be pitted now and I never did anything to it except scrub and shoot it for many years. I also bought a "ruined" A Grade Fox 16 gauge several years ago. After a very agressive scrubbing session, the barrels were as new. I think some "minor pitting" is really surface rust. It isn't rocket science to mic the inside of the bores and compare the measurement to the known standard. Some exceptions to the Parker standards were on the big side, but I think we know what is unreasonable and indicates a hone job.
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