My Shield went boom.

A couple of comments, one arising reflexively on the other board where I am no registered.

Glaser has not always been a Corbon product. I don't recall when Peter Pi bought out Glaser but there is a possibility you have pre-Corbon ammo.
If it is Corbon vintage Glaser, I think ol' Pete owes you a gun.
His predecessor is likely out of reach.

Out of battery?
The primer was hit in the center. Have these folks ever looked at a Browning type action to see what the barrel does as it moves out of battery?

S&W will treat you right but I doubt they will do it for free.
 
I enlarged the ammo photo and the casing are marked Winchester 40 S&W. How do you think this is CorBon/Blazer? I have been using CorBon for many years, without a hint of a problem of an over powered round. All casings are marked CorBon and I shoot 9, 40, and 45 without one issue or notion of excessive powder.

Bob

I guess this is not true anymore as I just went thru this with Corbon ammo I recently bought at Cabelas. I noticed when I got it home to load my mags that the brass had WIN stamped on the casings. So I go back up there to see what was going on and sure as hell we looked at 4 other boxes and they were all stamped WIN (no Corbon stamp like I had before). Another employee there said that that's not uncommon.
 
I'll bet they're squirming at Smith&Wesson right now.

That sort of catastrophic load-induced disassembly is something that keeps gun manufacturers up at night.

Why would S&W be squirming they didn't load it with unknown ammo.My quess he had a squib and fired another round behind it.I can not see that much damage without a barrel obstruction.If S&W replaces his pistol it is out of the goodness of their heart.They are not responsiable for this.
 
To the OP...... Was there any chance at all that the first shot was a squib?

I reload for 40 cal in my Sheild, and would like to know what the full cause of this
 
As mentioned by another poster, and my observation of your pictured rounds, you have some serious setback issues. Even very minor bullet setback in .40 S&W can lead to catastrophic kB's in any handgun that chambered for the 40. Glock's seem to garner a more then their fair share because of the barrel rifling they use, causing greater lead builup in their barrels causing increase in pressures for an already high pressure round. Don't clean your Glock 40's, use old and beatup, or reloaded ammo with bullet setback, and you have a recipe for disaster. In your case, I'm willing to bet it's all about that defective ammo you picture.
 
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I have several older boxes of Corbon .40 ammo. Most of it is loaded in Star Line brass. Some are stamped corbon. I am a range officer and we have had a few .40 Glocks blow apart over the years. All from case ruptures. .40 is a very high pressure round and any handgun could blow apart when subjected to this much pressure being released. Glocks usually blow because the loose unsupported chamber puts too much stress on the brass. Any flaw could cause a case rupture.
 
Why would S&W be squirming they didn't load it with unknown ammo.My quess he had a squib and fired another round behind it.I can not see that much damage without a barrel obstruction.If S&W replaces his pistol it is out of the goodness of their heart.They are not responsiable for this.

I tend to agree with you. I have had a squib load before and luckily knew something was wrong and did not fire the next round.

Glad you were not injured.
 
Questions:

I cant tell from the pics. Is the chamber intact? If so then you must have had an out of battery primer strike? The location of the damage makes it look like the round that was in the top of the magazine fired on its way to the chamber?

Interesting.
 
Looking at the pics of the primer on the other forum it looks like the shell itself exploded during extraction. A new twist on FTE!!

::insert smiley eating popcorn waiting to hear what really happened!::
 
To the OP...... Was there any chance at all that the first shot was a squib?

I reload for 40 cal in my Sheild, and would like to know what the full cause of this

I do not recall the first round sounding different. This is a small 3" barrel so the likely hood of it staying in there is probably low already, not sure. But I don't recall anything out of the ordinary from the first shot.

WallyJJ
 
A couple of comments, one arising reflexively on the other board where I am no registered.

Glaser has not always been a Corbon product. I don't recall when Peter Pi bought out Glaser but there is a possibility you have pre-Corbon ammo.
If it is Corbon vintage Glaser, I think ol' Pete owes you a gun.
His predecessor is likely out of reach.

Out of battery?
The primer was hit in the center. Have these folks ever looked at a Browning type action to see what the barrel does as it moves out of battery?

S&W will treat you right but I doubt they will do it for free.

Any idea when Corbon took control of Glaser? I am guessing these rounds are between 10 and 17 years old although if I had to guess I would say around 10 to 12 years old.

WallyJJ
 
Interesting thread. You kept referencing that this was "old" ammo. I hope you send all the parts and pieces to S&W for a full analysis. I would be pretty sure they can replicate what happened. Be advised, it may not require them to give you a new firearm.
 
Glad you're not seriously injured.

I've seen a couple of case head/web failures that looked similar to what's visible in the picture looking 'up' the magazine well of your Shield. Different plastic guns.
 
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