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How do these primers look?

Discussion in 'Handloading and Reloading' started by Axis II, Apr 8, 2020.

  1. Axis II

    Axis II Member

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    Not my gun but someone sent this to me asking. CCI SPP, mixed 40cal brass, 165gr bullet and Hodgdon 700-x powder. Seated at 1.120 and 5gr of powder. To me it appears there is a little primer issue going on there.
     

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  2. Walkalong

    Walkalong Moderator Staff Member

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    Looks like really sloppy fit of the firing pin to the hole.
     
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  3. edwardware

    edwardware Member

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    Looks like the FP hole in the slide was machined by a thumbless monkey.

    If you're asking about pressure, it appears to be low.
     
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  4. buck460XVR

    buck460XVR Member

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    I agree. Nuttin' wrong with the primers themselves.
     
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  5. 25-20 WCF

    25-20 WCF Member

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    Fired in a High-Point perhaps?

    You cannot judge chamber pressure by primer appearance alone.....



    .
     
  6. Axis II

    Axis II Member

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    Either an M&P Shield 40cal or M&P compact 40cal. He owns both so not sure which one he tested in.
     
  7. Axis II

    Axis II Member

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    Thanks guys. I figured I would ask because these are his first reloads and he decided to setup a Lee progressive and get going without help. He wont go over 5gr because he just wants plinking/blasting ammo.
     
  8. Jake in TX

    Jake in TX Member

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    I just checked Hodgdon's load data. He is at max with 5.0 grains of 700-x.

    Jake in TX
     
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  9. TonyAngel

    TonyAngel Member

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    I'm seeing some primer flow there. He needs to back off. Geez, why would anyone hotrod with 700X. There are much better powders for that.
     
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  10. Axis II

    Axis II Member

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    Your looking at Berry's plated data. He is using FMJ which max is 5.5.
     
  11. Jake in TX

    Jake in TX Member

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    My apologies, I did not look closely enough.
     
  12. Slamfire

    Slamfire Member

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    I still think he ought to cut his loads and then see how the primers turn out. It could be an over sized primer hole, and it could be more powder in the case than that particular pistol can handle.

    And it could be the reloader is using scoops and not verifying the weight with a scale.
     
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  13. Axis II

    Axis II Member

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    You know what I didn’t think of him using scoops. He wanted to use the one that came with the lee dies and I told him no. He says these are all hand weighed in a digital scale. When I get a free moment I’ll see what’s wrong.
     
  14. 2bfree

    2bfree Member

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    It is an oversized firing pin hole, not a bad thing, just is what it is. Very common with some guns like the Beretta 92 FS. Just search firing pin hole Beretta 92 you will find a lot of pictures.
     
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  15. Hondo 60
    • Contributing Member

    Hondo 60 Member

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    IDK I dont see a problem.
    But I wouldn't shoot his reloads
     
  16. 243winxb

    243winxb Member

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    A maximum powder charge at 35,000 PSI + needs a magnum primer if you want to stop primer flow.

    Mixed range brass adds to the pressure problem.
     
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  17. Axis II

    Axis II Member

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    Why?
     
  18. Axis II

    Axis II Member

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    I asked him to back down to 4.8/4.9gr and up his OAL from 1.120 to 1.130 for 165gr FN. I looked at the primers in person and one has a very sharp cut on it that appears to be from the firing pin.
     
  19. buck460XVR

    buck460XVR Member

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    What you are seeing is "primer drag/swipe". Very common in striker fired pistols, S&W M&Ps/Shields included. Generally gets worse as pressure goes up.
     
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  20. 243winxb

    243winxb Member

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    The OPs photo is from presssure & some swipe. (Edited)



    Swipe is when pressure makes the primer flow into the firing pin hole. The raised metal of the primer is shaved flat by movement of the bolt face. Swipe.jpg  1.jpg Wipe.jpg
     
    Last edited: Apr 9, 2020
  21. buck460XVR

    buck460XVR Member

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    Look at the primers in the trigger guard of the shield....they are exactly as in the OP. maxresdefault.jpg





    This guy does a pretty good job of explaining. Go to the 10:15 point to see the cases from the S&W.
     
  22. 243winxb

    243winxb Member

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    See edit . Blew up op photo. May have a little of both, swipe & wipe. :rofl: 2 for the price of 1. Screenshot_20200409-141451.jpg
     
    Last edited: Apr 9, 2020
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