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Primer Dimples- Inconsistent Locations - picture

Discussion in 'General Glocking' started by Mootness, Oct 17, 2011.

  1. Mootness

    Mootness

    35
    0
    Jun 16, 2011
    Details: Stock glock model 29. Using reloads that pass the 'drop in the barrel test' and sit properly.

    At the range I had one failure to fire. It was my first failure to fire after so many thousands of reloads. (I would guess I'm somewhere in the 7-10k area.) Popped the ftf round out, and the primer dimple looked like a light strike. Thinking that's suspicious I tried to fire the round again, it went off. That's pictured #3 with two dimples.

    Also pictured, numbers 2 & 4 have the primer strikes way off center.

    Number one is a sample of the other 40 empties where the primer is hitting well centered.

    What's causing this primer strike issue? Is it connected to the failure to fire?
     

    Attached Files:

  2. JR

    JR Moderator Millennium Member

    3,054
    1
    Dec 29, 1998
    Oldtown Idaho USA
    The strikes off center are a failure to go into battery. Your case is swelled or the OAL is prohibiting full battery.
    A light primer strike can be caused by a dirty FP channel, high primer, hard primer, failure to go into battery or many, many others.
     

  3. Mootness

    Mootness

    35
    0
    Jun 16, 2011
    The case should not be swelled because of the Lee Factory Crimp die. The OAL seems like the guilty party.

    Light primer strike: I broke down the slide, the firing pin channel looks clean, nothing suspicious, dirty, metal shavings etc. The primers are seated on a lee turret press, every primer is consistently seated the same way so they wouldn't be high. I am using CCI primers, they are known to be harder.

    Here's another picture in case it helps of the last 8 rounds from the problematic batch of reloads. Next up I'll shorten the OAL and see if that makes a difference. Of the 8 remaining/now fired, some measured as long as 1.279". [Nevermind, no new photo because there is a space limit. If I remove old photos that's not going to help others.]