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Annealing Rifle Brass

Discussion in 'Handloading and Reloading' started by frankge, Nov 23, 2010.

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  1. frankge

    frankge Member

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    Does 7.62x39 rifle brass need annealing after a certain number of firings? I notice some of the PMC and Prvi brass comes new with the annealing mark on it.
     
  2. Walkalong

    Walkalong Moderator

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    All brass is annealed. Military brass, and I guess some others, have not been tumbled to remove the mark. How often should you anneal? That can be debated for days. I do not bother with it for common brass.
     
  3. FROGO207

    FROGO207 Member

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    Yeah that is up for debate for sure. I do anneal my bottle neck brass after every other reloading unless I have a buttload and don't care if it splits the neck. In my experience the annealed brass will last most times until the primer pockets loosen up rather than splitting the case necks. Is it worth the hassle? I do it as a matter of procedure and do think that on say 7.62X54 the longer case life is a benefit. On 5.56 NATO? Probably not as the brass is so inexpensive to begin with.
     
    Last edited: Nov 25, 2010
  4. R.W.Dale

    R.W.Dale Member

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    I still have a batch of RP 7.62x39 cases left over from when I had an AR15 so chambered that was on it's 13th loading when I sold the upper. My routine was to anneal on the 7th loading and to use a case gauge to prevent overworking the cases.
     
  5. justgoto

    justgoto member

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    That is what I do also. I only anneal bottle-necked brass, the straightwalled brass just gets reloaded until the neck splits.

    I have gotten over 50 firings with both 30-30 and 30-06 brass and still counting.
     
  6. Ruger GP100 fan

    Ruger GP100 fan Member

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    Is there any benefit annealing 22-250 brass if I'm only neck sizing? The shoulders stay where they are after having been fired in the same gun several times,don't they? Do I understand correctly that annealing softens the shoulder so when it is moved at all during reloading it is less likely to fail at the shoulder? If I can get longer lifespans by annealing then I'll learn how and do it.
     
  7. justgoto

    justgoto member

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    Unless the shoulder starts making the cartridge hard to chamber,I only neck size. Neck sizing only, just as annealing, is another important part of lengthening case life.

    No. They will lengthen slightly every shot. If you have hot loads they will lengthen a lot. When my shoulders get to long, the cartridge will be hard to chamber. Then, I'll full length size trying to bump the shoulder back .001".

    Yes. Annealing softens the shoulder and a soft shoulder is more pliable, able to take more working of the metal.
     
  8. Ruger GP100 fan

    Ruger GP100 fan Member

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    Well,it looks like I'll be learning another reloading tool. I'm getting there,but some of it comes slow to me. Yesterday I learned that primer pocket reaming all cases to the same depth and weighing each piece of brass,choosing only the ones weighing the same would give me more uniform cases to use just for target rounds and the rest fouling and plinking rounds. According to my mentor I'm reaching the end of the line when it comes to loading for a factory gun.The rest is up to me. Still have to teach myself to find a better seating depth for my gun.
     
  9. Walkalong

    Walkalong Moderator

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    Yep, that is when I did my .222 Mag cases. They don't fall off trees like .223 cases do. Besides, my .223 cases have held up until the primer pockets get too loose, so I don't worry about it.
     
  10. Ruger GP100 fan

    Ruger GP100 fan Member

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    Could someone please post a link to a good annealing tutorial thread here at THR?
     
  11. rcmodel

    rcmodel Member in memoriam

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  12. Ruger GP100 fan

    Ruger GP100 fan Member

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    It's a bolt 22-250.
     
  13. rcmodel

    rcmodel Member in memoriam

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    Sorry, I was still pondering on the OP's question about annealing 7.62x39.

    As for the 22-250?
    I did anneal mine every few firing cycles.
    But I also neck-reamed them every few firing cycles, or the necks would get too thick to release the bullet in the chamber.

    Check yours by trying a new bullet in a fired case before resizing.
    If it won't fall in of it's own weight, the necks are getting too thick and need to be inside reamed or outside turned.

    rc
     
  14. Ruger GP100 fan

    Ruger GP100 fan Member

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    Is reaming by simply loading a cordless drill with the proper dia. reamer and running it through the neck an acceptable method? Or do they make hand-held reamers you can turn by hand while holding the case in a shell holder?

    Many thanks for the links,by the way.
     
  15. jmorris

    jmorris Member

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    You don't have to anneal at all but your brass will not last as long as properly annealed cases. I get mixed cases from range brass and built an automatic annealer so I run new to me through each time, to keep it simple. If I know that it's mine I anneal once every three firings.

    [​IMG]

    [​IMG]
     
  16. rcmodel

    rcmodel Member in memoriam

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  17. Ruger GP100 fan

    Ruger GP100 fan Member

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    I sorta expected that. Any drill/core drill/reamer will just try it's best to follow the hole that's already there. Years ago when I ran lathes cutting mostly cast iron many had cored holes where we would machine further by whatever means the engineers dictated. Run-out was always the price of cutting corners by simply drilling or reaming the hole. The only way,from my experience,is to bore the hole before using a drill or reamer,at least with cast iron.
    How close does your machine come to eliminating all run-out and how close to being concentric with the rest case does it come? I may just have to get myself one of those.
    I should add here as I have before posting questions about making great brass that I have only a factory rifle,but I still want to take this brass thing clear to the end and I greatly appreciate your excellent responses,as I also appreciate the help all posters provide. I think I can honestly say that to me the ideal situation would be concentrating on reloading but having a great marksman doing the range thing. I love sitting at the press and working with a marksman to get ammo as close to perfect as possible would be exciting.
     
  18. Ruger GP100 fan

    Ruger GP100 fan Member

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    By the way,frankge,I sorta took your thread and ran with it. My apologies if you consider my actions hyjacking,but hopefully you do not and are learning as much from your thread as I am.
     
  19. Walkalong

    Walkalong Moderator

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    Wilson makes neck reamers to fit their trimmer as well.
     
  20. frankge

    frankge Member

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    fine by me
     
  21. Walkalong

    Walkalong Moderator

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    One thing to remember when full length sizing is that if the sizer is set for work hardened brass, after annealing it will push the shoulder back too far if not re-adjusted. The soft brass gets pushed back further, and does not spring back as much.
     
  22. Ruger GP100 fan

    Ruger GP100 fan Member

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    I have been resizing with a full-length die that I back off about 3/4 of a turn and am not touching the shoulders. Will I run into problems after annealing the necks?
     
  23. Walkalong

    Walkalong Moderator

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    Problems? I wouldn't think so.

    Are you checking where your shoulder is? If you are, just check after sizing an annealed case with the sizer set the same as before. You will find it is different now. Just re-adjust it. Or back the sizer off to begin with, and work up to where you want to be with the first case.
     
  24. Ruger GP100 fan

    Ruger GP100 fan Member

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    WOW,jmorris. I just got around to checking out your photobucket. Great design and build!
     
  25. Walkalong

    Walkalong Moderator

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    jmorris is a freakin' genius.
     
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