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Model 1873 barrel to block loose

Posted: Mon Dec 11, 2023 6:55 pm
by Tom_s
My 1873 trapdoor mfg date 1886, has witness marks where barrel meets block. The extractor fits barrel/block perfect when witness marks line up. However the barrel is only hand tight when witness marks line up, not “ wrench” tight as I would expect. Is this acceptable and if not what would you do?

Thanks
Tom

Re: Model 1873 barrel to block loose

Posted: Mon Dec 11, 2023 9:05 pm
by Dick Hosmer
It is NOT acceptable.

I had a similar case with my "experimental" LH-rifled carbine - which i do not shoot, but I think the looseness was caused by shooting, against the grain/torque, so to speak. What I did was LIGHTLY peen the threads until it took a MODEST wrenching to bring the marks in line - fine for casual display use (it no longer moves in handling) but not for shooting.

If you are going to shoot it, I'd suggest rather more enthusiastic peening, or, perhaps a REAL gunsmith/machinist might have a better answer?

Re: Model 1873 barrel to block loose

Posted: Mon Dec 11, 2023 11:58 pm
by John S.
Loctite? Not original, but designed to take care of just this sort of problem.

Re: Model 1873 barrel to block loose

Posted: Tue Dec 12, 2023 12:21 pm
by Jim
How about a THIN brass washer around the barrel shank . . .
It would provide a “crush fit” when tightened.

Re: Model 1873 barrel to block loose

Posted: Wed Dec 13, 2023 9:21 pm
by Tony Beck
I have done the washers, but made the washer from steel shim stock. Worked fine.