gun BAD broke !

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  • kansas
    Bloodstained
    • Nov 2017
    • 65

    gun BAD broke !

    I was out zeroing today with 6.5g(18) for up coming hog hunting trip ... using 123 SST ...



    ... the new Spec-Rest tripod is a great zeroing tripod almost as good as prone ... previous group was inside a 3/4 inch circle an inch high and right. After making adjustments starting firing next 5rd group and got a fail to feed. First I thought maybe I need to adjust the gas to open up a little more due to cooler weather, but nope, this was a different problem. Eventually I figured out the bolt broke and part of it was jammed up in the chamber.

    Eventually, using a dental pic, I got out the piece and here is what is all looks like ...



    So, certainly I need a new bolt, but do I need a new barrel? I can see some shiny silver scratches in the "chamber" but this is in the part behind where the brass seats. The part where the bolt seats.

    Either way, I don't assume I can fix it before the trip, so having to substitute 5.56(18) ... using TSX 62 gr ... but I will loose half my energy ... which is not good for hogs ... the 123 SST will go right thru them ... almost too much penetration. The 62gr TSX knocks them down at close range out of my carbine, but we were going to try using the 6.5G(18) to reach out farther and pick off the runners at ~300yds ... so can the 5.56(18) do that with half the energy?

    Will call Dustin at Prairie Tactical tomorrow to figure out what to do with the barrel/bolt situation. In the mean time, I went ahead and set up the 5.56(18). Only other option is .300WM(24) ... But I don't like hog hunting with a bolt run in case they run in on us. I'll still be taking my carbine, but we wanted to try the LR option for one night ... worst case, we scratch that and just go with tried and true point blank range (out to 200yds) stuff.
  • Bigs28
    Chieftain
    • Feb 2016
    • 1786

    #2
    When is the trip? Bft might have some bolts available. I could overnight you one on Tuesday and you get Wednesday.

    Comment

    • bj139
      Chieftain
      • Mar 2017
      • 1968

      #3
      You only have one Grendel? Shame on you.
      At least have a spare bolt.
      This page displays when the page cannot be found, the link is broken, or the page has been moved.


      I was wondering if you lapped your receiver face.
      Other posts mentioned this can even pressure on all the bolt lugs.
      Last edited by bj139; 01-21-2018, 09:32 PM.

      Comment

      • rwh
        Warrior
        • Jun 2014
        • 188

        #4
        Inspect the barrel extension. It's unlikely you got any of the pieces of the bolt down the barrel. Can't be sure from the picture but aren't all of the fragments accounted for? I'd get a new bolt plus a spare and give some serious thought to what kind of pressure you are seeing.

        Comment

        • bj139
          Chieftain
          • Mar 2017
          • 1968

          #5
          I was thinking factory loaded 123 SSTs but that may not be true.

          Comment

          • kansas
            Bloodstained
            • Nov 2017
            • 65

            #6
            Aye, factory 123 SST.

            I was running over gassed for a while ... see "stovepipe" thread ... but the over gas problem got fixed ... but maybe that cracked the bolt and today finished it?

            I have spare bolt and bcg pieces for 5.56 ... but not for 6.5g ...

            ==
            BFT= Big fancy Thing-a-ma-jig?

            Trip starts 8 Feb ...


            ==

            Yes all fragments likely to be visible are accounted for ... a small scratch or two on the barrel extension ...

            ==
            Thanks for all the feedback !!!

            Comment

            • Clarence
              Bloodstained
              • Dec 2015
              • 53

              #7
              It's Blunt Force Trauma. Look at the group buy section.

              Clarence

              Comment

              • BluntForceTrauma
                Administrator
                • Feb 2011
                • 3897

                #8
                Yes, I have a bolt available. K, PM me if interested.
                :: 6.5 GRENDEL Deer and Targets :: 6mmARC Targets and Varmints and Deer :: 22 ARC Varmints and Targets

                :: I Drank the Water :: Revelation 21:6 ::

                Comment

                • kansas
                  Bloodstained
                  • Nov 2017
                  • 65

                  #9
                  PM sent - thanks !!!

                  Comment

                  • kansas
                    Bloodstained
                    • Nov 2017
                    • 65

                    #10
                    BTW, I ordered a bolt and BFT just sent me an email that he has shipped me the bolt ... and my wife is still pushing buttons to paypal him the money ... this forum is effin' unbelievable !!!

                    Comment

                    • Arkhangel5
                      Warrior
                      • Apr 2016
                      • 229

                      #11
                      Kansas,
                      Just curious, make of bolt and amount on rounds on?

                      SY

                      ps
                      great that BFT hooked you up!

                      Comment

                      • kansas
                        Bloodstained
                        • Nov 2017
                        • 65

                        #12
                        Rds

                        400 Horn 123 AMAX
                        200 Horn 123 ELD
                        80 Horn 123 SST
                        20 Fed Berger 30

                        9310 MPI tested bolt (per Dustin's PTA website) http://shop.ptacarms.com/AR1565-Gren...-65GRUPPER.htm

                        ==

                        I want to hope it was the overgas situation that put stress on the bolt ... see my "stove pipe" thread from back in November (below).

                        Comment

                        • VASCAR2
                          Chieftain
                          • Mar 2011
                          • 6218

                          #13

                          Comment

                          • bj139
                            Chieftain
                            • Mar 2017
                            • 1968

                            #14
                            Kansas,

                            I guess I'm not the first person to have thought about this.

                            Didn't you post that you have a $12,000 optic?

                            But no spare bolt ($58).

                            Comment

                            • mdram
                              Warrior
                              • Sep 2016
                              • 941

                              #15
                              .136 or .125 bolt?
                              just some targets for printing
                              https://drive.google.com/drive/folde...xQ?usp=sharing

                              Comment

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