This barrel hasn't coppered since day one. The last time I cleaned (200 rounds ago) I noticed a little copper but not much. I cleaned it last night and holy crap at all the blue patches. It took 20 patches to get it somewhat to stop coming out blue then I put gunslick foaming bore cleaner it there and the foam that shot out the end was dark blue. Had to do gunslick twice while letting it set muzzle down on a white paper towel for a few hrs to drain out and as you can see the paper towel is solid blue. I've never completely shot a barrel out but am I on the verge with this one? 700 rounds on it, Criterion barrel. These patches are after getting all the black carbon out, it was literally dripping blue out the muzzle on to the floor.

