SIG 220 10MM Catastrophic Failure

[Wolfie]

Saw this on the Sig site.

http://sigtalk.com/sig-sauer-gunsmithing/56900-sig-220-10mm-catastrophic-failure-2.html

I was out shooting my 220 10mm and trying out some new ammo. I had already put 300 or more rounds through the gun throughout its short lifetime.
I have been in talks with SIG and the Ammo mfg. SIG says it's "impossible" for the pistol to fire out of battery. They charged me $150 to put it back together.
The ammo mfg did check the lot and I sent the ammo back to them.The ammo mfg is saying they want to make it right regardless of fault (so far).
The rear of the cartridge bid blow out down the ramp and blew the grips and safety off, and a spring too.

[Ramjet]

yikes good they fail in a direction not towards the operators face.

[tommac919]

Would have been nice to see pics...

Waiting for my 220 to come in.

[Bluefish]

Pics in link in OP.
Russ

[Bruno747]

I responded to the thread with some rough measurements. It looks to me like it was just a round that got too much powder.

[Intercooler]

Do you have to register to see the pictures?

[4949shooter]

Do you have to register to see the pictures?

Good question. Maybe someone can post the pics for us?

[BEEMER!]

Here are some pics

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[BEEMER!]

more

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[BEEMER!]

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[Intercooler]

Doubletap? When a the brass blows like that do you get swelling that can be measured?

[4949shooter]

BEEMER thanks for the pics...

[DM1906]

Doubletap? When a the brass blows like that do you get swelling that can be measured?

Simply, yes. That looks like a brass failure, similar to some I had a few years ago. And, just the same, it was (non-Starline) Double Tap brass. The case dimensions should be near chamber dimensions. DT has been quick to correct (replace with "Double Tap" brass) the failed 10mm brass I've had, but vague with details, only saying the brass was supplied by "other than Starline". Double Tap brass supplied by Starline is "Double Tap" headstamp, while the others, such as "McNett" and "DT" are "other". They wouldn't say who.



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[Intercooler]

Is that bottom one the blown brass or another piece? It looks like it's bellied from poor support.

[The_Shadow]

The overcharge comes to mind...things like powder bridging can cause an overage or even under charge.  Then there is a possibility of wrong powder being used...like Tightgroup instead of Longshot.