Powders /Bolt gun

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  • Hattrick
    Bloodstained
    • Jan 2014
    • 80

    Powders /Bolt gun

    I'm thinking of a new build with a terminus action and spinning up one of barrel's for the grendel. Has anyone tried or have a load using R26 ? I'd be interested in hearing what you guys run/pushing in bolt guns.
    Last edited by Hattrick; 07-24-2022, 09:15 PM.
  • myrifle
    Warrior
    • Nov 2015
    • 206

    #2
    H4895,varget,arcomp,benchmark,8208,h335,h322,aa252 0,ramshot tac.

    Some of these powders listed work best if the bullet being used cna be seated very long. Varget behind a 120 gold dot seated well past 2.300 coal length is magical.

    Comment

    • jasper2408
      Warrior
      • Jan 2019
      • 671

      #3
      Shooters World Match Rifle and SW Tactical are also pretty good powders but are more temp sensitive than some of the ones myrifle mentioned.
      Last edited by jasper2408; 07-24-2022, 09:06 PM.

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      • EastTNHunter
        Warrior
        • Jul 2021
        • 166

        #4

        Comment

        • Remington Jim
          Bloodstained
          • Apr 2020
          • 89

          #5
          Way to SLOW even with heavy bullets .

          Comment

          • Klem
            Chieftain
            • Aug 2013
            • 3520

            #6
            Originally posted by Hattrick View Post
            I'm thinking of a new build with a terminus action and spinning up one of barrel's for the grendel. Has anyone tried or have a load using R26 ? I'd be interested in hearing what you guys run/pushing in bolt guns.
            Hattrick,

            R26 is one of their slowest which means you will run out of case space long before you reach max pressure. 30% will be unburnt out the end of the muzzle and you will only get about 2,000fps. But it is safe for plinking, if you don't mind flames at night and larger than otherwise group sizes.

            R15 is closer to optimum.

            Comment

            • Hattrick
              Bloodstained
              • Jan 2014
              • 80

              #7
              What kinda speed you get?

              Comment

              • Klem
                Chieftain
                • Aug 2013
                • 3520

                #8
                Originally posted by Hattrick View Post
                What kinda speed you get?
                19" barrel
                2300 fps 120ELD, 27.0/H4895 @ 57mm OAL.
                2370 fps 120NBT, 27.7gn/H4895 @ 58mm OAL
                2500 fps 107SMK, 28.5gn/8208 @ 57mm OAL
                2510 fps 100NBT, 28.6gn/8208 @ 58mm OAL
                2650 fps 100ELD 29.6/8208 @ 57mm OAL

                I don't shoot heavier than 123 in this calibre - the case is too small. 123 is a great compromise for maximizing distance in a Grendel but it gets there slower than a wet week. Grendel shines at shorter ranges and hunting small-medium game with lighter bullets.

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