doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Blown Baker

I thought it best to open a new thread. I am posting Randy's pictures. Please direct all questions to him.
To make discussion easier, I am assigning a number to each picture.

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Pete

Thanks Pete. One comment on the wads in the last photo. The wad on the left is the one recovered downrange from the site of the incident. The other is from the same gun prior to the incident. The metal piece is the one I took the measurement from. It hit my brother, the shooter, in the leg. Its the only piece we found. Randy

Bulge on case head, cratered primer?? I know what I'd call that it I saw it on a high power rifle case-pressure excursion.
Mike

Was this the same gun shown a year or so ago ?

You think the pitting was deeper than you thought ?

Thank you Randy and Pete for posting this.
I am ready to learn.

Nos. 16-18. There's some serious pressure going on there.

jOE, Same gun. As I mentioned, this gun was in beautiful condition. Metal with no issues whatsoever. No indication of barrel honing or tampering. Original all the way. Factory chokes. No evidence of pitting anywhere. Looked over the damaged area with a Schneider 4X loupe closely to see if any indication of flaws,pitting or fractures. Nothing. My son is a metalurgical engineer BS,MS MI.Tech, and did the same to see if he could see anything suspicious in the fracture or torn area. He felt nothing was indicating failure metal wise. Points to pressure??? Anyone have a thought on the straight line metal failure at the point closest to the breech? This appears to be where it gave way first and tore its way off further up the barrel. It seems to follow the contour of the damascus pattern. Might by chance it was not properly welded there and that gave the high pressure a weak point to blow. I'm willing to assume blame for reloader error, but can't figure out how to duplicate the error. On purpose or by carelessness. Randy

"Points to pressure". Look at how the case head flowed into the extractor cutout. The other empties certainly won't look like that. Primer is deeply cratered where the metal flowed.

It looks (to me... I'm not an expert and don't play one on TV) like a serious loading error or one of those deals where the fire goes out just as the shot charge starts moving, and then reignites with the results seen.

No injuries we hope?

Unless I'm seeing things the photos show pitting just ahead of the chamber.

I'm with Mike on this one. Something made that a very hot load. Was this a factory or handload?