9mm Factory load Case blow out

[Helocat]

Was at my buddies property shooting this weekend, he saves all the brass from him and others that shoot out there for me. He pulled this little gem out saying "I guess you don't want this for reloading". I told him every case with that headstamp is going into the brass recycle bin.

Said it was one of our friends that bought the ammo from Cabelas on the cheap. Said when it blew the gun jammed and they had to work it to clear. Looks to me like a fault in the case, there is no bulge anywhere or traditional signs of overpressure, primer is still seated. He said he thinks it was fired from a Glock 19 but the primer strike does not look like a Glock to me.

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[fredball]

looks odd

 

[AMT]

Looks like an overcharge to me.

I had a case blow out like that from a HOT charge.

Also, "things" are happening so fast that it looks like the firing pin was still in contact with the primer when this all happened, as can be seen from what appears to be it was still in contact with the primer when the slide started to move and extract the shell (by the "drag mark" on the primer at the firing pin strike).

I've been wrong MANY times before, but that's what it looks like to me.

(Following to hear from others)

 

[osprey]

How does that even happen if in full battery? I would check barrel for damage.

 

[WAYNO]

Looks like a textbook unsupported case blowout. More prevalent with larger calibers, but it can happen with a 9mm too.

Supported Vs. Unsupported Chambers - Detroit Ammo Co.

A chamber provides full cartridge case support only if the case is supported down to the level of the INSIDE BOTTOM of the case.

detroitammoco.com

 

[DizzyJ]

That sucks.

 

[Helocat]

How does that even happen if in full battery? I would check barrel for damage.

He said the firearm was fine. My suggestion was to not shoot any more of that ammo! Cheap ammo = costly longterm use. Good gravy this is why I reload and laugh everyone I read someone saying "you cant load 9mm cheaper than you can buy it!". I don't load cheap ammo, commercially with the same components is 4x the price of the "cheap stuff" it's being compared too.

Looks like a textbook unsupported case blowout. More prevalent with larger calibers, but it can happen with a 9mm too.

View attachment 686693

Supported Vs. Unsupported Chambers - Detroit Ammo Co.

A chamber provides full cartridge case support only if the case is supported down to the level of the INSIDE BOTTOM of the case.

detroitammoco.com

For sure I have no doubt it was from unsupported in the Glock breach. But still should not have blown out like that, I accept some bulge that we can deal with. But blow out. yikes.

 

[WAYNO]

For sure I have no doubt it was from unsupported in the Glock breach. But still should not have blown out like that, I accept some bulge that we can deal with. But blow out. yikes.

No it should not have, and it's never acceptable. But it does happen.

I was a witness to this blowout. Extremely violent.

 

[Helocat]

No it should not have, and it's never acceptable. But it does happen.

I was a witness to this blowout. Extremely violent.
View attachment 687044

Yikes 10mm is allot of power too.

 

[osprey]

Makes me want to put all aftermarket barrels on my remaining glocks without them.

 

[Helocat]

Makes me want to put all aftermarket barrels on my remaining glocks without them.

I hear you. But in all the years I have shot Glocks, and prob somewhere close to a mil rounds, I personally never have had one do that. Bulge yes, but blow out no. I roll form all my brass so no bulge issues for my reloads.

Think this was just cheap brass or the one with the flaw in the metal. Still, all WCC headstamps from my buddy's house went in the brass recycle bin.

 

[SUPER X]

Was at my buddies property shooting this weekend, he saves all the brass from him and others that shoot out there for me. He pulled this little gem out saying "I guess you don't want this for reloading". I told him every case with that headstamp is going into the brass recycle bin.

Said it was one of our friends that bought the ammo from Cabelas on the cheap. Said when it blew the gun jammed and they had to work it to clear. Looks to me like a fault in the case, there is no bulge anywhere or traditional signs of overpressure, primer is still seated. He said he thinks it was fired from a Glock 19 but the primer strike does not look like a Glock to me.

View attachment 686685 View attachment 686686

I have had the same thing happen with the same headstamp , some of them also had split cases .The headstamp is dated 1987 .are you shure it wasnt remanufactured amunition?

 

[arakboss]

Looks like a textbook unsupported case blowout. More prevalent with larger calibers, but it can happen with a 9mm too.

View attachment 686693

Supported Vs. Unsupported Chambers - Detroit Ammo Co.

A chamber provides full cartridge case support only if the case is supported down to the level of the INSIDE BOTTOM of the case.

detroitammoco.com

Friends don't let friends shoot with partially supported chambers

 

[Helocat]

I have had the same thing happen with the same headstamp , some of them also had split cases .The headstamp is dated 1987 .are you shure it wasnt remanufactured amunition?

Unknown - but it was bought from Cabelas as a budget buy at some point. I doubt it was a reload, just crappy brass.

 

[Hatman1793]

That case makes a great *Show & Tell* story. BTW, 9mm WCC cases are military spec cases, even without the NATO cross-in-the-circle headstamp mark Like the one show.
Could it be mislabelled submachinegun ammo?
Can you post a pic of the box?

 

[Helocat]

That case makes a great *Show & Tell* story. BTW, 9mm WCC cases are military spec cases, even without the NATO cross-in-the-circle headstamp mark Like the one show.
Could it be mislabelled submachinegun ammo?
Can you post a pic of the box?

Only came to me as one separated from a bag of a few thousand rounds of fired brass. A friend fired it sometime in the past month, box long gone. The only intel I got on it was, "cheap priced". The old adage of you get what you pay for continues to be true.

 

[rickys2]

Unknown - but it was bought from Cabelas as a budget buy at some point. I doubt it was a reload, just crappy brass.

WCC is military' rds with a crimp on the primer. Shot millions in training, Winchester boxes the say LE ammo rated at +p Nato. The problem I see is that the crimp as been removed. Reloaded of sure and over charge to boot. WCC is a pain because of the crimp, but it good brass if you have the time to process it. I personal throw it out with all the 9mm brass out there why go thru the process. IMO its been reloaded, overcharged and unsupported.

 

[rickys2]

Oh one more thing ........ maybe wrong powder was used in the reloading process.

 

[Helocat]

WCC is military' rds with a crimp on the primer. Shot millions in training, Winchester boxes the say LE ammo rated at +p Nato. The problem I see is that the crimp as been removed. Reloaded of sure and over charge to boot. WCC is a pain because of the crimp, but it good brass if you have the time to process it. I personal throw it out with all the 9mm brass out there why go thru the process. IMO its been reloaded, overcharged and unsupported.

I have found WCC listed as most made with the military crimp but some made w/o the crimp. The w/o was made was said to be sold to LE and general public. Few brass processing guys have said they just swage all WCC vrs looking to see if they have it or not.

My choice is to toss all of it.

 

[rickys2]

Must be general public, as a retired amour for a local police department. We when thru 5000 rds of that stuff a month and all of it was crimped.