Look at my 10mm primer strikes!


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alpha6164
August 9, 2010, 09:23 AM
Here are a few brass from my session this weekend. These were shot in lone wolfe barrel from Glock 20. The brass cases are from Georgia Arms 180gr FMJ range ammo which chrono'd 1085ft/sec so is not a nuclear load. The nickel brass you see are from DT 135, 180 and 200gr loads.

The cases themselves look fine without any signs, but not sure why the primers look like the firing pin was dragged across the face of the primers. I am not sure if i have noticed that with my other hand guns.



http://i108.photobucket.com/albums/n35/ssoleymani/General/3083ec07.jpg
http://i108.photobucket.com/albums/n35/ssoleymani/General/41b3f29f.jpg
http://i108.photobucket.com/albums/n35/ssoleymani/General/94336223.jpg

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TexasRifleman
August 9, 2010, 09:28 AM
That seems to be pretty common with the Glock. If you search the web for "Glock primer strike" you will find a lot of them that look exactly like yours.

It doesn't appear to be any cause for concern from what I've read about it.

beeenbag
August 9, 2010, 09:32 AM
Texasrifleman hit it right on the head. This is very typical for a glock. Even my 9mm glock does this. No concern whatsoever.

ljnowell
August 9, 2010, 09:34 AM
Normal for 10mm, 9mm, 40 from a glock.

alpha6164
August 9, 2010, 09:52 AM
Thanks guys. I feel better now :)

RyanM
August 9, 2010, 10:01 AM
Those are flowing into the firing pin channel a little more than I might be comfortable with for my handloads. Though factory ammo looks exactly like that in my experience, so I'm probably just paranoid.

Sport45
August 9, 2010, 10:03 AM
not sure why the primers look like the firing pin was dragged across the face of the primers

Because that's exactly what happened. The barrel unlocked and began tilting while the firing pin was still in contact. As others have said, it's normal.

HOWARD J
August 9, 2010, 10:16 AM
When I pick up my 9's at the indoor pistol range---
I look for the Glock strike.
Works good----cases last for many reloadings.

Sport45
August 9, 2010, 11:42 AM
When I pick up my 9's at the indoor pistol range---
I look for the Glock strike.
Works good----cases last for many reloadings.

Why? Are you keeping them separate or something? I never give much thought to whether or not the primer has been wiped on a 9mm case.

cougar1717
August 9, 2010, 01:22 PM
Very typical if you've picked up any amount of range brass.

mousegun380
August 10, 2010, 10:16 AM
Yea I've heard it called "primer smear".

ReloaderFred
August 10, 2010, 11:44 AM
Primer swipe is the term most used when the firing pin hasn't fully retracted before the slide starts to move to the rear. It's pretty common.

Hope this helps.

Fred

W.E.G.
August 10, 2010, 12:18 PM
I am bothered by the amount that the primer flowed back into the firing pin channel.

MAGNUM primers probably would reduce primer flow.

dsv424
August 10, 2010, 02:33 PM
Thats exactly what my primer strikes look like from my Glock 20. In fact that is normal because of the shape of the Glock firing pin.

cpaspr
August 11, 2010, 09:10 PM
As others have indicated, that is what every Glock fired case I've ever seen look like, regardless of caliber.

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