Primers cratering even after spring replaced/ Rem 700-223

Discussion in 'Rifle Country' started by ACES&8S, Jul 21, 2022.

  1. ACES&8S

    ACES&8S Member

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    Got my gunsmith take the Remington Tactical 700-223 because the primers are cratering
    badly then the strikes became too light to crank the bullets.
    Ordered a new firing pin and 18-pound spring for either or both he needed.
    He replaced the spring and, man, was it in sad shape. Flat on both ends
    and worn down. So, her replaced the spring and not the firing pin because
    there is no visible wear on it.
    I will bet there haven't been more than 200 rounds put thru it in all the time
    I have had it, and I got it new. It is one of the most accurate rifles I have but
    now it comes back with the same problem it had before, PHOTO INCLUDED
    I just looked back and the cratering has been going on, progressively, for
    some time. I fireform the cases and keep them till I have enough to reload
    so, I had them laid back.
    Has anyone else had this problem with the s/a 700?
    Or did I lead my gunsmith into thinking the spring was the problem?
    Cratering Primers 700 223.JPG
     
  2. jdsingleshot

    jdsingleshot Member

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    Firing pin hole in bolt could be too large.
     
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  3. snowman357

    snowman357 Member

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    high pressure from reload?
     
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  4. Slamfire

    Slamfire Member

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    I agree, Remington has done that in the past, to "better seal" the bolt from gas leaking down the firing pin shaft.

    To the OP, cut your loads. Cut your loads by a half a grain till the primers stop cupping. And if possible, chronograph those loads. You might have a tight barrel. I had to cut my Wilson barrel loads in the 223 by over a grain and a half, when I used them in my Kreiger barreled rifle.
     
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  5. ACES&8S

    ACES&8S Member

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    It is obviously too large, which had me thinking about getting an oversize firing pin.
     
  6. ACES&8S

    ACES&8S Member

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    It does the same thing with factory ammo, not just 1,000 rounds per case but 20 per box, from
    federal all the way up and down, tried them to see if they did the same. Some not as bad but
    all had the cratering.
     
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  7. ACES&8S

    ACES&8S Member

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    Love to hear your opinion. You have sent some good info my way and even brought one of my rifles
    back to life.
    That could easily be the problem, the spring he took out looks like it has had pressure put to it, almost
    like powder burn, except I can't imagine it getting that far back but it is what it is.
    Then again, the hole for the firing pin is obviously too large and could let pressure get backwards if the
    action is happening as you suggest is a possibility, could explain the burnt look the original spring has.
    Plus, it is flat on both ends like it has been hammered hard into that shape.
    Chronograph is the next step, will do.
    Mystery abounds, with our Remingtons here lately.
     
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  8. edwardware

    edwardware Member

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    No, but cratering modestly, perfectly normal for a factory Rem700 rifle. And no, a stronger FP spring won't fix that.

    You could get the bolt bushed, and the pin turned to fit. You'll need a gunsmith, not a parts swapper.
     
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  9. ACES&8S

    ACES&8S Member

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    In my gunsmith's defense, he is very good.
    My other 700 Rimingtons don't crater any primers.
    I am no expert, but the crater looks like it fits the oversize hole perfectly.
    Of all the rifles I have this is the only one cratering primers that I have ever seen, I had to look up
    the name for it.
    I was actually beginning to think a slightly weaker spring might do better, but If I knew the answer I wouldn't
    be asking the question.
    Thanks for the input.
     
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  10. CoalCrackerAl

    CoalCrackerAl Member

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    Is the cratering dangerous? My Mosin 91/30 was piercing primers . Even with light loads. It would give me a kiss lol. I adjusted the pin. It solved the issue.
     
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  11. N555

    N555 Member

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    That's what I was going to say.
     
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  12. Steve in PA

    Steve in PA Member

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    I wouldn’t worry about it. I have a Beretta 92FS that leaves that kind of mark on the primer no matter what make of ammo used, factory or reloads.
     
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  13. LoonWulf
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    LoonWulf Contributing Member

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    The other option besides bushing is simply run harder/tougher primers. Cci srm, mil spec, rem 7.5s etc.
    I only use federal srps for low pressure cartridges, and pistols.
     
  14. 243winxb

    243winxb Member

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    [​IMG] A bevel was around the firing pin hole for a couple of years. 2010? Is yours bolt face flat or beveled?

    The photos are long gone, thanks to Photobucket. :fire:

    Reply from Remington.
    See post 15 http://www.gunrightsmedia.com/showthread.php?418473-Cratered-primers

    Found old photo. full.jpg
     
    Last edited: Jul 22, 2022
  15. David Hoback

    David Hoback Member

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  16. 243winxb

    243winxb Member

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  17. Varminterror

    Varminterror Member

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    Don’t sweat these. You have an oversized pin bore, just like millions and millions of other factory rifles. You’re not flattening primers and it doesn’t appear you’re anywhere near to a pressure which will pierce or rupture your primers - sometimes that crater can separate and stack into your firing pin bore, then eventually jam the striker assy. That’s just an artifact of factory R700’s, kinda like driving down a gravel road and then realizing your car got dusty… just a fact of life. Bush the pin if you really want, but it’s largely much ado about nuthin’ for most rifle owners.
     
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  18. GooseGestapo

    GooseGestapo Member

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    I’ve got a Remington Model-7 in ..223 that does the exact same thing.
    Don’t sweat it! Beretta does the exact same thing with their fire arms.
    As long as they don’t shear off metal from the primer, there is no problem.
    Using a CCI #41 primer will mitigate the cratering as it’s a harder milspec primer intended to reduce chance of a slam fire in an automatic rifle.
     
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  19. Nature Boy
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    Nature Boy Contributing Member

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    ….full stop, no “buts”, nothing follows.

    You aren’t blanking primers so drive on.
     
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  20. Remington1911

    Remington1911 Member

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    I don't think I would be too hard on the smith, no matter what you are fixing you always start with the cheap and easy first, and work your way up from there.

    I don't know the guy, and one post by the OP says he does know what he is doing. But yes there are a great many people that think they are a gunsmith because they can change the trigger on a 10-22.
     
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  21. David Hoback

    David Hoback Member

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    One reason I became MY OWN gunsmith. Over two decades ago I started tinkering. Maybe 9-10 years ago I turned it up. Because I knew there were things I would need a smith for. Not anymore.
     
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  22. Pivot Dr

    Pivot Dr Member

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    I have a Ruger tang safety rifle that craters and many times pierces small primers but does not with large primers. Explain that.
     
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  23. Nature Boy
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    Nature Boy Contributing Member

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    Which small primers? CCI 400?
     
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  24. lightman

    lightman Member

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    Thats a pretty common problem with Remington 700's. The fix is to have a bushing fitted to the bolt and the firing pin diameter matched to the bushing. There is a rifle builder on the Accurateshooter site that does this with a pretty fast turn-around time.
     
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  25. Pivot Dr

    Pivot Dr Member

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    Pick one! CCI, S&B, Federal, WW, RP 7-1/2.
     
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