Strange primers?

[Corner Pocket]

I was at the range the other day. A lady LEO was shooting a Glock 22 next to me. We chatted a bit about guns and stuff and I asked her whether she intended to keep her .40 brass. She replied that she would not keep it and that I was welcome to take it.

I picked it all up when she was through shooting. I just now decided to process the brass to get it ready to reload. I see that among the brass I obtained, I picked up 50 casings that have a strange rectangular stripe across the primer. I'm sure I've never seen any like this before, so thought I'd call out for some help from the gurus that hang out on here. I don't know whether the lady cop shot that brass, or whether it had been lying there before she began shooting. Thanks for any help!

Corner Pocket

 

[Dreaded]

perfectly normal.

Dreaded~

 

[SquirrelNuts]

That is from the striker in a Glock. It is a regular primer, but that is a distrinctive signature from a Glock. It is fine to use.

 

[Five of Clubs]

Agreed, the marks are from a Glock. Some of the case mouths may have a flat side too (and perhaps even a bulge at the base). Don't worry, your dies usually fix that stuff without any trouble. Shoot away!

 

[Corner Pocket]

I appreciate the replies, gents. You've educated me!

CP

 

[TAB]

Glockerized brass( 40) needs to go in the scrap bucket...

 

[RustyFN]

Glockerized brass( 40) needs to go in the scrap bucket...

I'll pay the shipping and take all the once fires 40 brass you want to throw away.
Rusty

 

[oneounceload]

Glockerized brass( 40) needs to go in the scrap bucket...

And why would that be? I have a 2nd gen G17 that I have had since new - all it gets is reloads...over and over again, range brass, once-fired, anything and everything and it has ALWAYS worked....more than I can say for my 1911

 

[rcmodel]

Glockerized brass( 40) needs to go in the scrap bucket...

Thats crazy talk there!

rc

 

[FROGO207]

I had no idea anyone disliked Glocks that much. I do not own one but have used mucho brass from the local LE range that has been glockerized and it worked fine in my firearms for many many reloadings so far.

 

[TAB]

its not like or dislike.

every single 40 I have ever seen that had a ruptured case was once fired glock brass.

 

[rcmodel]

Thats probably because there is so dang much of it in use.

rc

 

[TAB]

Its also always been at a USPSA matchs. Since there are no LEA here using glocks, once fired glock brass is hard to come by locally.

 

[ar10]

Here's how you can fix the Glockerizing. Don' look at them. Works for me anyway.

 

[50calshooter]

Glocks do not support the case head on the 40 thats why they rupture and bulge. They are very hard on the brass.

 

[50calshooter]

Glock 40's do not support the case head and the chamber is larger to feed better, which is realy hard on brass

 

[FROGO207]

I have some in 40 S&W and 9mm from the local LE range (5 gallon Buckets full), the 9mm does not appear to be bulged out like the 40 can be. As I said before no problems yet. I will watch closely now though.

 

[ar10]

I've picked up, cleaned, sized, and head stamped sorted over 50 thousand .40SW cases shot from about every type of 40 cal gun that's made. Of all of those case I tossed out only a handful that were unusable, (I tossed all the RP's because of sizing problems).
After reading so many posts regarding bulged and/or split cases along with the Glock unsupported chamber issue, it seems to me Glocks are getting a bad rap.
FWIW I shoot only XD's and my main carry is a 40SW sub, and guess what, my primers strikes are rectangular and All semi-automatic handguns have some unsupported chambers, some more than others. :banghead: