Glock Talk banner
  • Notice image

    Glocktalk is a forum community dedicated to Glock enthusiasts. Come join the discussion about Glock pistols and rifles, optics, hunting, gunsmithing, styles, reviews, accessories, and more!

Cracked 9mm case, likely culprit?

5K views 18 replies 16 participants last post by  cole  
#1 · (Edited)
So what causes this?
Primer is struck in the middle.
No signs of overpressure on the primer or the unsupported part of the case.
It was shot from a glock.
It is my reload. 5 gr unique under a 124gr PD FMJ at 1.15".
I have about 10 guys over to go shoot'n all the time. No tell'n what any of them bring over to shoot.
Notice how the brass is thicker on one side of the rim vs the cracked side.

My vote,
Bad case.

Image

Image

Image
 
#5 · (Edited)
"I" reloaded it 1 time.
However, I do have guys over to shoot.
Any one of them could have brought over some ultramax reloads. I think dicks sporting goods sell them. Or gun show reloads.
I shoot blazer/federal.
I hardly ever buy winchester.

How can you tell if they are worn before they crack?

I find it interesting that this is a winchester.
Here is another winchester and from what my buddy tells me, Its a brand new WWB round that he fired out of his Smith Wesson AR. He said he does not shoot reloads.
Image
 
#7 ·
Old age, worn out or just too brittle (no offense to Jack or Fred :supergrin:).

That only applies to Fred, I am a picture of perfect health and virility. (Did I mention the virility part? :whistling:)

Oh, BTW, looks like a split case to me. Unless you stop shooting you're going to get lots more.


Jack
 
#12 ·
FWIW, I experienced the same thing with a factory fresh Speer Gold Dot 124-grain SD round in my G26. Someone suggested "... s**t happens ...". Albeit very disappointng with $1+/round ammo. NOTE: I still like & use Speer Gold Dot ammo in several of my carry pieces.

Since I've got ~800 rounds through the G26, many with reloads previously fired in the same gun, without any other split cases, I don't believe the pistol's chamber is over-sized.

Like the man said, "... s**t happens ..." and for sure it will happen when the useful life of the case is exceeded (multiple reloadings).
 
#13 ·
"I" reloaded it 1 time.
However, I do have guys over to shoot.
Any one of them could have brought over some ultramax reloads. I think dicks sporting goods sell them. Or gun show reloads.
I shoot blazer/federal.
I hardly ever buy winchester.

How can you tell if they are worn before they crack?

I find it interesting that this is a winchester.
Here is another winchester and from what my buddy tells me, Its a brand new WWB round that he fired out of his Smith Wesson AR. He said he does not shoot reloads.
[/IMG]
I reload a lot of Win 9MM but I have so many that I just keep using the 1X cases that I have so I don't see any splits.

I do get split cases in .380 auto. I get 8-10 X usage before they start splitting. Same with .38 special that I load +P.

There's no way to tell ahead of time if the case is "worn out". You can keep count of how many times you've used them and then toss them after a couple of times if that's your comfort level. Or send them to me. :supergrin:

I inspect my rounds after reloading and I've picked up on a few "starting to split" cases while doing this.
 
#14 · (Edited)
Old age, worn out or just too brittle (no offense to Jack or Fred :supergrin:).
Jack is Mr Brittle, I am Mr. Worn out, we are both old.:tongueout:
Brass cracks, it just does. The composition varies so much from manuf to manuf & lot to lot. I have had handgun cases go 20 reloads (45acp) before losing one to a crack. Then I have had them go after 1-2 firings.:dunno: Keeping the pressures lower helps, but no guarantee either.
 
#15 ·
I may not be familiar enough with Jack to make wise cracks yet but what the heck. That shell crack is a lot like the crack in his back he is always talkin' about :) Must be from that Liberty City overpressure chasing those hoodlums down back in the day !!! Time to throw that case away
 
#17 ·
Hi,

I've had one cracked case that was a 357mag in brand new starline brass. It looked very similar as far as the crack. When I sent the brass to starline they said it wasn't right and replaced it. They mentioned doing some sort of test on the brass to see how much it would bend before giving way, etc. I think sometimes brass just isn't manufactured right. 9mm cases are usually quite strong, so I'll bet the brass was a bad batch.

Good luck,

Alan
 
#19 ·
Bad brass. It's just brass. It happens. Toss and move on.