I've got an rks barrel that was nitrited, thus far it shows sub 3/4 moa but I only have about 40 rounds through it. I've heard that nitriding can increase break in time as the coating takes a while to break down inside the bore, not sure how reliable that is though. The coating has also not been blown off the muzzle/crown area of the barrel, which with my cerakoted barrel the coating was starting to come off after 20 shots
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