I hate to interject in this lively conversation but I would like to make a comment as well as ask a question. Firstly, what we have been discussing in this thread in terms of reproof, only deals with guns with altered barrels, such as lengthened chambers, barrel honing, sleeving of barrels or any alteration of the barrel which is not original. I don't believe it has been suggested that century old guns, in their original condition in terms of their barrels, having to undergo a reproof. Secondly, and this question is for Larry, or any other person who knows the answer: Do all the gun manufacturing companies in the US conform to a standardized system of proofing their guns or does each company proof as it sees fit? Also, is every single new gun produced put through a proof process or is proofing done randomly where omly a representative sample of guns actually go through proof, say by lot?
