Pressure sign question

Discussion in 'Reloading' started by YancyW, Apr 14, 2018.

  1. YancyW

    YancyW GOLD SUPPORTER AH Veteran

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    I am not an expert by any means, but I am thinking this one might be a bit hot.

    IMG_2227 copy.jpg
     
    Last edited by a moderator: Apr 14, 2018

  2. Jay Bucher

    Jay Bucher AH Member

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    It looks like a little over pressure
     
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  3. Pheroze

    Pheroze AH ENABLER BRONZE SUPPORTER AH Legend

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    Oh man.:confused: And that's a real wack of powder
     
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  4. Dr Ray

    Dr Ray AH Elite

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    Bolt face might be pitted now so check.
    This sure is an overload.!
     
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  5. YancyW

    YancyW GOLD SUPPORTER AH Veteran

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    It did.

    The kicker is, this was factory ammo. Barnes LRX 190gr.
     
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  6. Dr Ray

    Dr Ray AH Elite

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    Wtf

    Get headspace checked by a gunsmith immediately. Something is terribly wrong.
     

  7. YancyW

    YancyW GOLD SUPPORTER AH Veteran

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    I am, the rifle is a custom build by Bob Beck, I am going to send it back to him. I have about 300 rounds through the rifle, it has run fantastic until this happened this afternoon.
     

  8. Bullthrower338

    Bullthrower338 AH ENABLER SILVER SUPPORTER AH Legend

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    with 300 rounds through it I am surprised that if it were a headspace issue, damn well has signs of it though. Could be a mixture of a few things with all the stars aligning to create a perfect storm. A severely out of spec case maybe combined with a slightly out of spec chamber. Was this round loaded from the magazine? Could the bullet have setback into the case during recoil then fed into the chamber? Set to far out and the mono metal bullet buried in the lands? Whatever it was, pressure was substantial, glad you and your rifle are in one piece.
     
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  9. Jay Bucher

    Jay Bucher AH Member

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    If you have 300 rounds thru it. It’s an ammo problem. Bob loves Bergers. Try some of them.
     

  10. IdaRam

    IdaRam BRONZE SUPPORTER AH Elite

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    Wow
    Had you fired any rounds from this same box of ammo prior to this one? Or was this the first out of the box? Have you shot this same ammo before?
    Agree with post above, 300 rounds and no issues then this. Seems more like an ammo issue.
    Let us know how this shakes out (y)
     
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  11. YancyW

    YancyW GOLD SUPPORTER AH Veteran

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    210g VLDs is what I have mostly shot, but I was going to take it to Africa next month, so I was trying out something different.
     

  12. YancyW

    YancyW GOLD SUPPORTER AH Veteran

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    First round. Needless to say, I decided to stop at that point.
     

  13. lcq

    lcq AH Elite

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    These days I'm very leery of Barnes factory ammo as the company is no longer under Barnes control and QC isn't the same. I bought a box of 7mm ttsx 150gr and they were a mix of brass and silver primers. So much for lot to lot consistency. If it is good with other ammo then you should send that box back to Barnes because it looks like a case for recall. Factory ammo is invariably loaded conservatively (lawyers) and that round with the blown primer and ejector mark looks really hot
     

  14. Bullthrower338

    Bullthrower338 AH ENABLER SILVER SUPPORTER AH Legend

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    Check OAL on your bergers and on the ttsx loads. Check your chamber with a bullet comparator. I’m interested to see what those numbers are.
     
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  15. ChrisG

    ChrisG BRONZE SUPPORTER AH Fanatic

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    That is definitely too hot. The blown primer might be a sign of excessive head space, but you also have a lot of brass that flowed into the extractor cutout (I am assuming this is a push feed by the look of it). Cartridge brass usually doesn't start to flow until you get up to around 80,000 psi. I would call Barnes, send them the lot number on the box and the blown case and tell them what happened. It is also possible that this particular piece of brass was never hardened the way it was supposed to be. Did it stick in the chamber? Too soft of brass will do this same thing at normal pressure.
     
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  16. fourfive8

    fourfive8 AH Enthusiast

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    Too hot no doubt. Maybe the perfect storm of variables. The most likely may or may not be the reason and it will be difficult for anyone to admit a fault or problem.

    IMO- may be something like not enough clearance in neck or throat and/or throat (freebore) is too short. Some ammo seems ok and shoots well as hot ammo many times does... then a type of ammo that may be running at upper end of perssure coupled with a type of bullet, that if stuck into lands, will increase pressure- perfect storm.
     
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  17. YancyW

    YancyW GOLD SUPPORTER AH Veteran

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    Yeah, you can see where the extractor pulled the rim of the casing. Just under MAG on the case.
     

  18. ChrisG

    ChrisG BRONZE SUPPORTER AH Fanatic

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    Sorry I meant ejector cutout.
     

  19. PARA45

    PARA45 AH Fanatic

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    WOW!!!!! I would contact the ammo company real quick and in a hurry. If there is any damage to your rifle, I would let them know as well and have them reimburse you.
     

  20. PeteG

    PeteG AH Elite

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    I had a similar issue with factory sako ammo in my 300wm.
    2 rounds out of a box blew the primers out.
    the rest of the box was fine, shot them out and another box or two with no further issues.
     

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