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Crimp for 44mag

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  • y-not
    Member
    • Aug 2013
    • 115

    Crimp for 44mag

    First time loading 44mag. Using 200gr X-treme RNFP and Bluedot at minimum powder charge. 15.0gr.
    I did some crimping with a Dillon die.
    I do not know if I have the correct crimp.
    Look at the pictures and let me know if it looks ok.
    The bullet was pulled to show more.
    Attached Files
  • #2
    Grendel Guy
    Senior Member
    • Sep 2009
    • 1943

    IIRC, one of the reasons for crimping is to ensure the projectile doesn't move when firing the others in the cylinder (if shooting a revolver). If you've a caliper measure them before shooting and compare them. Complete ignition of the slower burning powders is another reason.

    Comment

    • #3
      turbolarry
      Member
      • Jun 2024
      • 132

      I'm just barely getting into reloading and new; like I just bolted my press to the table, I've never loaded a round, and the spine on my reloading book is stiff with no wrinkles kind of new

      Does the round chamber? From the picture of the cartridge it looks ever so slightly bulged indicating a little too much crimp.
      The picture of the bullet looks hour glassed. From what I've read, bullet deformity indicates too much crimp.
      But again I've only researched a round that calls for no crimp, quarter turn at the most. How much turn on your crimp die are you using?
      Hopefully someone with real experience with straight wall cartridges can reply.

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      • #4
        BigBronco
        Calguns Addict
        • Jul 2009
        • 7066

        With a minimum charge the crimp looks fine to me. Shoot a few rounds max 3 through a full cylinder. Inspect the remaining three and look for bullet creeping foreward. The recoil can dislodge bullets if not enough crimp. Extreeme forward bullet movement in a revolver will block the cylinder from rotating. Don't ask me how I know. Think the Elmer Keith load.
        "Life is a long song" Jethro Tull

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        • #5
          bruce381
          Senior Member
          • Feb 2009
          • 2436

          looks fine I push loaded crimped round bullet first on side of work bench make sure a good push should not move.

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          • #6
            Grendel Guy
            Senior Member
            • Sep 2009
            • 1943

            Keep in mind that the crimp will work harden the case mouth over time and a heavy crimp will accelerate this. The result will be split case mouth than can relegated to .44 special, after trimming the case to the correct length and assuming it eliminated the split.
            Last edited by Grendel Guy; 06-06-2025, 4:09 PM.

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            • #7
              pennstater
              Veteran Member
              • Aug 2010
              • 4650

              Crimp looks good.

              MLC

              Comment

              • #8
                Cowboy T
                Calguns Addict
                • Mar 2010
                • 5706

                I have to agree. That's close to what my crimps look like with my cast bullets. Looks good.
                "San Francisco Liberal With A Gun"
                F***ing with people's heads, one gun show at a time. Hallelujah!
                http://www.sanfranciscoliberalwithagun.com (reloading info w/ videos)
                http://www.liberalsguncorner.com (podcast)
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                ----------------------------------------------------
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