Re-using Dented Cases

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  • 1911man
    Warrior
    • May 2015
    • 482

    Re-using Dented Cases

    Hello all, as some of you may know I am just getting into reloading for the Grendel but have been loading for my bolt guns for many years and my 7.62x39 AR for the past year. I find that my brass for this round gets alot more damaged than does my 7.62x39 brass out of the same platform.

    My question is this. Can I re-size and re-use cases with a decent sized body dent? I have attached three picture of 5 cases that have dents that I think look questionable. when I look inside the case there is a noticeable indentation inside the case. Do I have to scrap this brass after only being shot once?Is there a rule of thumb as to which cases to keep or scrap?

    Thanks guys.
    Attached Files
  • Younger
    Warrior
    • Dec 2012
    • 106

    #2
    I resize and shoot the dents out. Looks like you have a ejection problem that is causing the dents. I would try to fix that first. Do you have an adjustable gas block?

    Comment

    • ricsmall
      Warrior
      • Sep 2014
      • 987

      #3
      Reuse em. You could probably use an adjustable gas block, as well as trim a little bit off your ejector spring to soften that a bit.

      Richard
      Member since 2011, data lost in last hack attack

      Comment

      • Mesa1978
        Warrior
        • May 2015
        • 255

        #4
        Yes, load 'em and shoot 'em with the dents.

        Comment

        • 1911man
          Warrior
          • May 2015
          • 482

          #5
          Awesome, I was worried about wasting alot of brass. You guys dont think the dents will effect pressure/accuracy at all? I believe I have narrow the dent problem down to the shell deflector I had a buddy watch my rounds come out as I was firing and he could pick out the ones that were going to have dents based on how hard they hit the deflector. I am going to put a piece of velco or something soft on it and see if that helps.

          Comment

          • Mesa1978
            Warrior
            • May 2015
            • 255

            #6
            Originally posted by 1911man View Post
            Awesome, I was worried about wasting alot of brass. You guys dont think the dents will effect pressure/accuracy at all? I believe I have narrow the dent problem down to the shell deflector I had a buddy watch my rounds come out as I was firing and he could pick out the ones that were going to have dents based on how hard they hit the deflector. I am going to put a piece of velco or something soft on it and see if that helps.
            Velcro was a quick and effective fix for me to get the dents out. Adjustable gas block got me the rest of the way there.

            Comment

            • 1911man
              Warrior
              • May 2015
              • 482

              #7
              Is the idea of the adjustable gas block that my gun is launching these cases out at high speeds and that I can adjust the gas down to compensate?

              Comment

              • Mesa1978
                Warrior
                • May 2015
                • 255

                #8
                Yes, That is how I use the one I installed. They are described as being most effective on shorter barrels that get higher peak pressures, but I have liked mine on my rifle length system, too.

                Comment

                • wfa17332
                  Bloodstained
                  • May 2015
                  • 44

                  #9
                  Use them.

                  Comment

                  • AZ. Old Guy
                    Warrior
                    • Jan 2015
                    • 168

                    #10
                    Velcro worked on mine. They were dented on the mouth though.
                    NRA Lifer

                    Comment

                    • VASCAR2
                      Chieftain
                      • Mar 2011
                      • 6219

                      #11
                      If you don't want to spend the money for an adjustable gas block you can buy an adjustable gas key. There is a srew adjustment on the key to kimit the gas. I have never used one but it is another option. Not as easy to change for different loads but I have read some postive post on the adjustable gas key.

                      Comment

                      • LRRPF52
                        Super Moderator
                        • Sep 2014
                        • 8569

                        #12
                        Your cases look totally normal. The trail edge of the ejection port often causes the dents in a gun that is gassed really hard. You can do several things to tame your ejection in order to slow cyclic rate and treat brass more nicely:

                        * Adjustable gas as mentioned
                        * Increased buffer weight
                        * Increased recoil spring weight
                        * Reduced ejector spring length

                        The pile tape from Velcro works only on the brass deflector/Brunton bump, which doesn't always cause these dents. I personally just process the brass as normal and don't worry about it if I see it.
                        NRA Basic, Pistol, Rifle, Shotgun, RSO

                        CCW, CQM, DM, Long Range Rifle Instructor

                        6.5 Grendel Reloading Handbooks & chamber brushes can be found here:

                        www.AR15buildbox.com

                        Comment

                        • 1911man
                          Warrior
                          • May 2015
                          • 482

                          #13
                          Awesome, thanks for all the replies!

                          Comment

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