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9/16x28 min barrel muzzle diameter?

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  • 9/16x28 min barrel muzzle diameter?

    Have a hunting rifle with a barrel that measures .635" at the muzzle. Would there be enough meat to thread it 9/16x28 and use a TBAC CB?


    Sent from my iPhone using Tapatalk

  • #2
    Per TBAC's thread diagrams (https://thunderbeastarms.com/tech/thread-specifications), that's not enough meat for a shoulder. A jam nut is probably the best solution for you.
    ...I cut it twice and it was still too short...

    The user known as L98S10 on the old new Sniper's Hide

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    • #3
      Never use a jam nut with a suppressor!!!! Thats asking for baffle strikes. There is nothing to hold a jam nut square. 9/16 threads need at least .660 .

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      • #4
        TBACRAY, do your muzzle devices work to index on the muzzle instead of a shoulder? If so, what is the minimum thread length to do that?

        If that works with your muzzle devices, he could just go with the standard 5/8-24 indexed on the muzzle.

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        • #5
          They index on the shoulder
          # Please use email instead of "PM's" to contact me.

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          • #6
            We can also do muzzle face mount brakes if we do it here at the shop, in some cases where the muzzle OD is too small for a shoulder
            # Please use email instead of "PM's" to contact me.

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            • #7
              Ray and Zak,
              So I need .660" at the muzzle for 9/16" threads, regardless of 9/16x24 or 9/16x28? That's what I'm reading/assuming but want to clarify/verify.
              Thanks!

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              • #8
                For a 9/16" (24 or 28). Face mount brake, you need .560"+. Shoulder mount, you need .660"+.
                www.thunderbeastarms.com

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