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Hey all, I have a question about barrel threading and accuracy: Is it possible (or common) to thread a rifle barrel for a can without screwing up the accuracy? I have an extremely accurate rifle and a really nice suppressor that I would like to put together. I do not want to turn my tack driver into a mediocre shooter just so I can hang my new toy off the end. What say you? Get it threaded by someone who knows how or leave my best rifle unsuppressed because it's too risky to chance ruining it? Thanks, Bruce "The designer of the gun had clearly not been instructed to beat about the bush. 'Make it evil,' he'd been told. 'Make it totally clear that this gun has a right end and a wrong end. Make it totally clear to anyone standing at the wrong end that things are going badly for them. If that means sticking all sort of spikes and prongs and blackened bits all over it then so be it. This is not a gun for hanging over the fireplace or sticking in the umbrella stand, it is a gun for going out and making people miserable with." -Douglas Adams “It is just as difficult and dangerous to try to free a people that wants to remain servile as it is to try to enslave a people that wants to remain free." -Niccolo Machiavelli The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all. -Mencken | ||
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There are many gunsmiths qualified to thread a rifle without harming the accuracy. ADCO comes to mind although I have never used them. Others coming by this thread may offer other smiths to contact. Getting shot is no achievement. Hitting your enemy is. NRA Endowment Member . NRA instructor | |||
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on a principal level there is no reason for threading the barrel to screw up anything. but anyone can screw up. “So in war, the way is to avoid what is strong, and strike at what is weak.” | |||
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I've had Gemtech thread a couple different barrels for me. They did a super job on both with a very fast turnaround. https://gemtech.com/barrel-threading-service/ | |||
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Properly threading a barrel will not change it's accuracy. Once you put a can on it, you may need to tweak your loads a bit because the harmonics might be different than from before. Sic Semper Tyrannis If you beat your swords into plowshares, you will become farmers for those who didn't! Political Correctness is fascism pretending to be Manners-George Carlin | |||
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The key to maintaining accuracy is to center the barrel on the lathe using the bore, so that when turning down the barrel to the major diameter of the threads, the finished thread will be perfectly concentric with the bore. The outside barrel surface is not used, as it may be slightly eccentric to the bore. On a rifle barrel, the breech end of the barrel is also centered at the outboard end of the lathe spindle using a "spider" (basically three screws used to hold the breech end centered. I'm just a hobby gunsmith/machinist, but I've threaded a few barrels. a Ruger MKIII:  | |||
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