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Thread: turn barrel and thread without removing from rifle?

  1. #1
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    turn barrel and thread without removing from rifle?

    Obligitory ramble first:
    So I have a ruger m77 mkII chambered in .270. Has been my hunting rifle since i started hunting (bought it when i was 13). So i have done some improvements on it, had it floated and pillar bedded, and installed a timney trigger (absolutely a must for these firearms, and totally awesome). My latest addition to it is a Witt machine clamp on muzzle brake. Between those three modifications it is a total joy to shoot.

    While I really like my Witt muzzle brake, it is quite heavy. The firearm has a slimmer (and 2" shorter) barrel than most other mkIIs, it was like a wand. Now its more like a... gun... had considered rebarreling with a schilling (local gunsmith does a good job and is super reasonably priced). But i have a hard time dropping that much on a hunting rifle to get target rifle accuracy (gun shoots about a MOA right now).

    To run a screw on muzzle brake (lets face it, if i had a thread on it my next form 1 for a suppressor would be getting filled out pretty quick) the barrel would need to go on a lathe. Had a zaney thought though. Does anybody know of a tool to turn the end of a barrel while it is on the firearm? Thinking that a piloted hand reamer, or a contraption that would pilot off of the bore, mount to the upper barrel, and run off of a drill or something. Do any of these exist?
    For the curious, i had to measure the barrel for my Witt brake, at the muzzle it is exactly .5" exactly a inch from the muzzle it is exactly .51". So it wouldnt take much to take it to say .4990 or so.
    Seems a die like a crowning die (sorta) would be the most cost effective method.

  2. #2
    Registered User rentprop1's Avatar
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    If you're going to run a can you want it to be 100% concentric to the bore

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    Yup

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    using a lathe, you do not have to remove the barrel. It is a little more time consuming though. Removing the barrel is no big deal. Just spend the money and have someone thread the barrel that knows what they are doing. Dont go half ass now.
    Chris Hipes
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    Was not aware that a barrel could be threaded on a lathe while still attached to the action. Will have to give the gunsmith a ring and talk to him about it

  6. #6
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    It can be threaded if enough sticks out of the lathes through hole I would just take it apart for threading and DO NOT thread it by hand it will not work baffle strike will happen for sure
    Last edited by arch stanton; 09-13-2020 at 04:10 PM.
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    Maybe you could go this route and DIY first cut barrel to correct outside Diameter with https://www.carolinashooterssupply.c...ory_s/2213.htm then thread your barrel with https://www.carolinashooterssupply.c...ory_s/2208.htm. I have heard really good things about going this route. Not sure what your gunsmith will charge compared to buying these tools for yourself. Just my .02

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    Quote Originally Posted by SAndrus View Post
    Maybe you could go this route and DIY first cut barrel to correct outside Diameter with https://www.carolinashooterssupply.c...ory_s/2213.htm then thread your barrel with https://www.carolinashooterssupply.c...ory_s/2208.htm. I have heard really good things about going this route. Not sure what your gunsmith will charge compared to buying these tools for yourself. Just my .02
    I highly recommend not doing any of this. Send if off to get threaded the correct way on a lathe you will for sure have a baffle strike gong this route
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    Interestig, that was kinda what i had been thinking. Havent gotten around to calling the gunsmith yet. Think i will go with him for it. I kinda like this gun and dont want to screw it up lol

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    Quote Originally Posted by ericthered View Post
    Interestig, that was kinda what i had been thinking. Havent gotten around to calling the gunsmith yet. Think i will go with him for it. I kinda like this gun and dont want to screw it up lol

    For sure there is no way to guarantee the threads will be running with the bore. Hand threading shouldn't even be an option with any gun
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  11. #11
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    Whatever you have to pay to have the barrel removed, threaded, and reinstalled, it will be a lot cheaper than replacing a can especially with the stamp.
    FWIW, the threads must be aligned with the bore, not the outside of the barrel (bores aren't perfectly centered in the barrel).

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