I can't definitively say that this barrel has a carbon ring but I don't know what else would cause the issues I started seeing with ~160 rds on the barrel. Difficultly closing the bolt, circular scuffs on chambered bullets, chambering also seated the bullets deeper, and moderate ejector marks with a load that had up until that point hadn't shown any signs of being significantly overpressure. However, going off velocity it was over 65K. Dropped down over a grain and was still getting ejector marks. The angled mirror tip on my borescope is too large for 22 cal so no worthwhile pictures. Scuffs are smaller after a round of CLR and scrubbing. If there is another cause and/or solution I'd love to get it figured out.
PBB 22 GT .169 FB, Alpha brass, American Reloading "N555", 88 gr ELDM & 90 gr SMK @ 2.500 COAL
LE Wilson full length sizing die w/ bushing and Frankford Arsenal universal seater.
70%/30% suppressed/unsuppressed, and only cleaned for the first 5 shots when new.
No changes in brass prep, loading equipment, or components. Dummy cartridge is still getting scuffs at 2.465.
PBB 22 GT .169 FB, Alpha brass, American Reloading "N555", 88 gr ELDM & 90 gr SMK @ 2.500 COAL
LE Wilson full length sizing die w/ bushing and Frankford Arsenal universal seater.
70%/30% suppressed/unsuppressed, and only cleaned for the first 5 shots when new.
No changes in brass prep, loading equipment, or components. Dummy cartridge is still getting scuffs at 2.465.
