Funky superbolt wear?

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  • Load SM5
    Scruffy Administrator

    • Oct 2000
    • 6772
    #1

    Funky superbolt wear?

    Maybe this should be in tech but...

    Up until today my superbolt was wearing pretty evenly. After random people put 7000+ shots through my gun at Mardi Gras it still looked pretty good. After today, though, I noticed that it had small deep furrows cut into it, all the way around running about half the length of the bolt. And a few small chunks were missing. Can anyone explain this? I honed the sharp edge off of my spring when I first got the gun so that can't be it.

    Also I when I first got to the field I went to the chrono expecting to only have to make a small adjustment either way. Instead my mag was shooting around 185. A few turns of the adjuster and it shot fine all day but I was wondering if there was a way my velocity could have turned down without me doing it. Unless Tom messsed with it at Mardi Gras it should have been shooting around 285 like it was the weekend before.

    All that aside, I had a great day today and still madly love my SFL. My wife is so jealous.


    Moorewatch

    If you read this, thank a teacher.
    If you read this in English, thank a soldier.
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    • Russ
      Senior Membrane
      • Jul 2001
      • 1935
      #2
      Is there a small burr around the breech? When you say "half the length of bolt", it makes me think that there must be something, perhaps on the feed tube that is scratching the delrin? Maybe the ball detent?

      BTW, does your superbolt have the foamie? Mine does and so far, so good.

      Russ, just guessing

        Comment

        • Load SM5
          Scruffy Administrator

          • Oct 2000
          • 6772
          #3
          Well, I found the problem, at least with the velocity... There's a ring that is threaded into the breech that the bolt spring is braced against. Mine had unscrewed a few turns, causing the spring tension to go down along with my velocity.



          It also looks as though the extra ball detent may have pushed a bit of the feed tube onto the the breech and caused the wear. I'll look into that.


          Moorewatch

          If you read this, thank a teacher.
          If you read this in English, thank a soldier.

            Comment

            • Drizit
              Take me to your Lizzard
              • May 2001
              • 943
              #4
              that shouldn't have caused the velosity drop, the spring only returns the bolt. it doen't affect the velosity like it does on a blowback.
              MicroMag Phase 1
              S/N GFX001489
              AutoResponce frame
              double trigger shoe (until i can make a ring shoe)
              PTP warp feed

              And the Biggest, Heaviest, 19+bps'ist Tippmann you have ever seen.

              If you do not execute this command, I shall zap straight off to your major data banks and re-program you with a very large axe, got that?



              There must have been a time
              when we could have said no.

                Comment

                • Load SM5
                  Scruffy Administrator

                  • Oct 2000
                  • 6772
                  #5
                  Arg, your right. That's why I don't do this for a living.


                  Moorewatch

                  If you read this, thank a teacher.
                  If you read this in English, thank a soldier.

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