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  1. 06-01-2013, 22:22 #1
    Jamnanc
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    Default Primer reading question. Maybe it's a Glock question

    I have a G32. I have both winchester white box and reloads with ugly primer strikes. The primer appears to have bulged/flowed into the bolt face to leave a rectangular indent. I don't see how this could be a pressure problem since its factory loads and reloads. Is it just the gun? The picture shows the factory loads on the left and the reload on the right. I'm being extra careful because its a glock and a 357 sig. Setback wasn't a problem, I pushed two moist patches through the barrel with CLP after shooting and the barrel looks shiny, so I don't think it's leading. The reloads are 124 flat points over 9 grains of hs-6 which is lower middle in my manual. Any ideas? Or meh... Keep shooting.
    Any help appreciated.
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    Last edited by Jamnanc; 06-01-2013 at 22:23.
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  2. 06-01-2013, 22:26 #2
    BuffCyclist
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    Looks like the typical marks left by all Glock pistols.
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  3. 06-01-2013, 22:31 #3
    Big Wall
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    Quote Originally Posted by BuffCyclist View Post
    Looks like the typical marks left by all Glock pistols.
    Agreed.
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  4. 06-02-2013, 08:58 #4
    KS63
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    Default

    Normal
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  5. 06-02-2013, 09:39 #5
    Jamnanc
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    Good, thanks. I ended the shooting early with that one to make sure. Too many Internet scaaaary stories for me to just bang away.
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  6. 06-02-2013, 09:47 #6
    spleify
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    No worries just a normal primer strike. Look at it as a positive that you are getting a good positive strike on your primers.
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  7. 06-02-2013, 09:53 #7
    MarkCO
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    It is normal and okay...but, it is not really classic "primer flow". Yes, deformation, but it is not caused by pressure in the primer cup but rather due to mechanical impact. In the 10mm, .357 SIG and even .40 S&W, some guys have gone to using a Glock fired 9mm case for reference, and then increasing the recoil spring rate until the primers match the 9mm reference. .357 SIG and 10mm Glocks, after 10s of thousands of rounds, can end up with an egg shaped firing pin hole and start to break firing pin tips off.
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  8. 06-02-2013, 12:23 #8
    Rabid
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    A good rule of thumb is you are looking for is when the radius around the edge of the primer starts to disappear for signs on over pressure.
    Normal - hot - really hot

    Normal - really hot
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  9. 06-02-2013, 12:27 #9
    Rabid
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    oops
    Last edited by Rabid; 06-06-2013 at 10:06.
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  10. 06-02-2013, 14:45 #10
    Jamnanc
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    Good info. Probably was a little over cautious. Now if I can get more of my 357 rounds to resize all the way...
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