Any load data 123 sst h335

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  • ljdavidson
    Unwashed
    • Oct 2019
    • 11
    #1

    Any load data 123 sst h335

    Hello all Grendel newbie and I'm looking for anyone that has load data on 123 SST s with h 335 or IMR 4198 those are the two powders I have at the present time. I loaded some of 23 and 24 grains of 4198 but my speed seems a little slow. My build is a 20 inch heavy barrel with 1 in 8 twist so if anyone's done any bullet loads for that type of system your input would be welcome thank you
    Ps mis type that it 20" not 28
    Tags: None
  • BobinNC
    Warrior
    • Oct 2017
    • 143
    #2
    123 grain Sierra HPBT 6.5mm Bullet

    Hodgdon Published Data

    Starting Load Max Load
    Powder COAL Grains Velocity Pressure Grains Velocity Pressure
    Hodgdon H335 .264" 2.250" 26.0 2,288 37,800 PSI 28.7 2,508 49,800 PSI
    Hodgdon H4198 .264" 2.250" 21.0 2,153 37,700 PSI 23.7C 2,375 50,000 PSI

    Not for the Honady 123 grain SST but the best your going to get for pressure tested data for those 2 powders. Just start low and work up.
    Last edited by BobinNC; 10-11-2019, 10:18 PM.

    Comment

    • grayfox
      Chieftain
      • Jan 2017
      • 4539
      #3
      I would not substitute the SMK for the hdy bullets.
      Hornady's 9th lists max H335 at 26.4 grs.
      No listing for H4198. none.

      Pressure signs for the Grendel cartridge do not show up until you're already over pressure.

      If you want to shoot the sst's (I like the bullet personally) you need to consider proper powder for it.
      Examples: AA2520, CFE223, 8208 xbr, AR comp (data in the Grendel Handbooks), a few others.

      In addition you need to get some reloading data books, like the Hodgdon mag, the Grendel Handbooks (from this site), a Hornady book, a Nosler book (some of the Nosler data is online as pdf's).

      To reload safely, you need these.

      Safety first.
      "Down the floor, out the door, Go Brandon Go!!!!!"

      Comment

      • JASmith
        Chieftain
        • Sep 2014
        • 1644
        #4
        BobinNC and Grayfox have good info. There are also four loads for theAMAX and H335 at ammoguide.com (https://ammoguide.com/?catid=456).
        shootersnotes.com

        "To those who have fought and almost died for it, freedom has a flavor the protected will never know."
        -- Author Unknown

        "If at first you do succeed, try not to look astonished!" -- Milton Berle

        Comment

        • sundowner
          Chieftain
          • Nov 2017
          • 1156
          #5
          My H335 load for the 123gr SST the max 28.7 , I get 2532 avg in my 20" PSA , about the same in my 18" BCA and 2616 in my 24" .

          Comment

          • ljdavidson
            Unwashed
            • Oct 2019
            • 11
            #6
            Thank you for your info on your load data I have low loading suppies in my area so I have to use what I can get so once again thanks for your info. Ps I am shooting a 20" heve barllel on an Anderson lower.

            Comment

            • cwlongshot
              Warrior
              • Mar 2018
              • 404
              #7
              I just tried some H335 under a 125 Partition last week with good but not stellar. Velocity from my 22? bbl was 2535 avg for top load. Right at 1?. This gun shoots better than that.

              But refinement may prove better accuracy.

              Good luck

              CW

              Comment

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