PTG has a new barrel nut

Discussion in 'Modifications' started by GrocMax, Jul 28, 2015.

  1. GrocMax Active Member

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  2. Al in Mi Active Member

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    223 or 308?
  3. Moose250f Member

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    No description on the link, but this is interesting
    will be watching this.
  4. spamassassin Well-Known Member

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  5. GrocMax Active Member

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    Just verified its the 7/8-28 thread 223/204 receiver size.
    wood chucker likes this.
  6. wood chucker Moderator

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  7. S1Loki Active Member

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    very interesting
  8. robert lynch CrossHair Precision Industry Partner

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    Wow great idea I wonder I have seen that before.:rolleyes:
    Keith likes this.
  9. Keith Moderator

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    Nice find. Would come in handy come time for a barrel swap. Of course, one would still need to get the tools from Robert Lynch to remove the old one or take it to a shop. I suppose one could use a pipe wrench but why ruin a perfectly good barrel nut, in case it's needed in the future...
  10. robert lynch CrossHair Precision Industry Partner

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    Keith, we don't make one. I hear the one from Tromix works very well. I was more joking about the nut. The 12 sides was originally what we were going to do, but went with six instead. I does make it nice to be able to grab a regular wrench to take care of the nut.
    PTG makes some nice stuff for sure.

    Rob

    Sent from my 0PJA2 using Tapatalk
  11. Keith Moderator

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    My mistake. Sorry, I confused you two. :)
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  12. robert lynch CrossHair Precision Industry Partner

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    Kieth, no worries at all sir.

    Sent from my 0PJA2 using Tapatalk
  13. GrocMax Active Member

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    I saved my barrel nut, used the pipe wrench on the original yukky throwaway barrel, made a smooth nut clamp set for the vise ;) Clamp down the nut, turn in the barrel.

    Gonna try to make my own assembly fixture, bought the materials before I found out others had already started making them.

    x-caliber is making me a 223AI 10 twist. They've done MVP's before, and they make decent stuff at a good price.
    Keith likes this.
  14. spamassassin Well-Known Member

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    10 twist? Interesting choice. I take it this will be a varmint type application? Curious as to why 10 twist. It's an odd one to see nowadays what with 7/8/9 being the current fad.
  15. GrocMax Active Member

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    The 'fad' is the TactiCool BS. I give no coituses about using military or pseudo-military spray n pray ammo. I'm not in the military, I can make a choice and can choose the best tool for the job at hand, prairie dogs.

    53vmax is a long bullet for its weight class, 12 twist won't cut it. 9 is more than it needs. 10 is an uncommon choice, the tooling will be fresh ;)
  16. spamassassin Well-Known Member

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    I love it when someone builds something a specific way and has an actual reason. I was wondering about which bullet you might be using. Figured that was the need being solved. I do like the idea of fresh tooling though. Makes me think about building a 12 twist gun for squirrels.
  17. GrocMax Active Member

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    Ground squirrels? 11 tw 3 groove 20 Practical. 32g-34g class bullets are lasers to 300+yds and 4000+FPS. No recoil. Economical (8-9 cents per) bullets available. Brass is economical. Dies- std 223 bushing die with a couple extra 20 cal bushings.
  18. Kent New Member

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    I have a couple of samples of PTG's nuts, CM & SS, and will post a picture as soon as I figure out how. They are for the 7/8x28 barrel tenon. Dave Kiff really came through for shooters, again. BTW, the nuts are 12 point, but not any standard wrench size. This was a last minute change in dimensions so they would match the diameter of the action. That said, you still have 6 pairs of wrenching flats to work with, which should be more than adequate to apply enough torque.

    FYI, I found out that the Mossberg barrel nuts are torqued by a machine, a very out of adjustment machine by my calculation. How else would you elongate the pin spanner hole in the tightening direction unless the torque is horrendously high? I have to believe that the residual stress would be detrimental to accuracy. Also, all that wrench rash on the factory installed nuts would help explain why a pipe wrench is the removal tool of necessity, not just choice.
  19. GrocMax Active Member

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    Just arrived today.

    1 1/16" 12 pt fits mine fairly well. Just go down to the pawnshop, buy a 1 1/16" socket, bore it, weld a bar on. You could clearance a 27mm 12 pt a tiny bit and get them to fit tight.

    A spline drive would be even better.
  20. Kent New Member

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    A 1 1/16" or 27mm was the original design intent, but the final nut version is a tad larger to match the receiver diameter. My box ends won't fit, but you must have a slightly sloppy wrench that does. What brand is it?

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