Bore grading standards?

alvin · 03-03-2010, 11:56 AM

No formalized array of descriptions. But I heard a few like,

"Probably not fired before" -- Probably? Most of time, it was fired a few rounds, including one overloaded round. Otherwise, how did inspector put the proof mark on it. But the bore is indeed mirror bright, with perfect rifling, no visible scratches. Muzzle looks new as well.

"Excellent" -- Mirror bright bore with strong rifling, but minor scratch lines may present. Muzzle might show minor patina.

"Very Good", "Good" -- Not mirror for sure, may have minor pits, or frosted but not very serious, still have complete and strong rifling. Muzzle shows minor rust, dings, etc.

"Sewer Pipe", "I cannot see any trace of rifling inside!", etc -- Self explained.

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Also, this bore business also has an "original" context like gun blue. If a gun is relined or rebarrelled, it should be explicitly described so. Many people do not though.

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03-03-2010, 11:56 AM	#2
alvin User Join Date: Jul 2007 Location: US Posts: 3,843 Thanks: 132 Thanked 729 Times in 438 Posts	No formalized array of descriptions. But I heard a few like, "Probably not fired before" -- Probably? Most of time, it was fired a few rounds, including one overloaded round. Otherwise, how did inspector put the proof mark on it. But the bore is indeed mirror bright, with perfect rifling, no visible scratches. Muzzle looks new as well. "Excellent" -- Mirror bright bore with strong rifling, but minor scratch lines may present. Muzzle might show minor patina. "Very Good", "Good" -- Not mirror for sure, may have minor pits, or frosted but not very serious, still have complete and strong rifling. Muzzle shows minor rust, dings, etc. "Sewer Pipe", "I cannot see any trace of rifling inside!", etc -- Self explained. ==== Also, this bore business also has an "original" context like gun blue. If a gun is relined or rebarrelled, it should be explicitly described so. Many people do not though.