Shorter than 10.5 Inch Barrels

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  • depletedyourcranium
    Warrior
    • Nov 2017
    • 129

    Shorter than 10.5 Inch Barrels

    Anyone have any real velocity numbers on really short grendel barrels, like 7.5, 8 or 9 inches? Are there any factory offerings by anyone in this size, or am I going to have get one specially made?

    I'm looking at building an PDW-style AR15 pistol, and I would like to use the 6.5, if its feasible, over the .300 blk or .223 rem. I know it might be challenge to get on running well versus a .300 blk, but it would be nice not to have to branch into a new caliber if I can avoid it.
  • Bigs28
    Chieftain
    • Feb 2016
    • 1786

    #2
    Hello Horde: Just thought I would let you guys know about a test we did recently on Short Barrels. We tested: 7.5 Bartlien at 100 Yards. Groups averaged 1.5 Inches 2000 FPS 123 Match King 8.5 Bartlien at 100 Yards. Groups Averaged 1.4 Inches 2100 FPS 123 Match King 10.5 Bartlien at 100 Yards. Groups averaged .9 Inches 2200

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    • depletedyourcranium
      Warrior
      • Nov 2017
      • 129

      #3
      Thanks Bigs28, just what I was looking for on that data.

      Anyone got any leads on real short barrels for sale? I'd like to keep it in the <$200 range.

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      • Bigs28
        Chieftain
        • Feb 2016
        • 1786

        #4

        but has a 9/16 thread pitch.

        Group buy, faxon, and psa have 12" and all around $200.

        Last year odin had their 12" on black Friday sale for 200.

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        • depletedyourcranium
          Warrior
          • Nov 2017
          • 129

          #5
          Oh I already have a 12", I'm looking for something less than 10".

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          • Bigs28
            Chieftain
            • Feb 2016
            • 1786

            #6
            Only thing ive seen less then 10" is custom order from precision firearms.

            Comment

            • A5BLASTER
              Chieftain
              • Mar 2015
              • 6192

              #7
              Shorter then the 11 inch AA barrel your going to have to go custom.

              So if you go that route just soon phoney up even more cash and get it cut on a bartlien or Krieger barrel and have the best ever super short grendel barrel.

              Or buy a dirt cheap barrel and send it off to be cut down to your spec length threaded to your specs and have them cut the gas port. Probably save 20 bucks over the top shelf custom barrel going this way.

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              • depletedyourcranium
                Warrior
                • Nov 2017
                • 129

                #8
                A cursory search has popped up a few makers that can do it for between $260 and $300, gonna keep shopping around but that's not too bad.

                Has anyone done a grendel build with a pistol length gas system? What has port size should I be getting?

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                • Keef
                  Warrior
                  • Jun 2017
                  • 296

                  #9
                  DIY cut and crown it's not as hard or scary as people make it sound....

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                  • depletedyourcranium
                    Warrior
                    • Nov 2017
                    • 129

                    #10
                    Originally posted by Keef View Post
                    DIY cut and crown it's not as hard or scary as people make it sound....
                    I dont have a lathe, no way I could get a concentric crown myself with basic hand tools. Besides I would also need to cut a new gas port and wouldn't have a gas block journal and not muzzle threads. I've shortened shotguns before, but I know better than to do a rifle myself and expect good accuracy when I'm said and done.

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                    • Keef
                      Warrior
                      • Jun 2017
                      • 296

                      #11


                      What kinda accuracy are you looking for? Only basic hand tools, time and care used on the above.

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