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- General Parker Discussions (https://parkerguns.org/forums/forumdisplay.php?f=2)

- - Photos from Dan's GH 20 (https://parkerguns.org/forums/showthread.php?t=36824)

Dan Steingraber

07-12-2022 06:17 AM

Quote:

Originally Posted by Andrew Sacco (Post 367587)

Damn you're a lucky man to be seeing out of that eye.

I am truly blessed Andy.

Frank Srebro

07-12-2022 07:42 AM

Quote:

Originally Posted by edgarspencer (Post 367583)

I am "curious" as to the origin of these linear striations. They appear to begin at about the forward portion of the rupture, and look as though something forced it's way with enough force to dig into the wall.

Thanks Edgar for posting a macro pic. I had the same observation when I first saw the pic but didn't get around to doing a macro. That's still a question mark for me.

Dan Steingraber

07-12-2022 08:16 AM

5 Attachment(s)

Quote:

Originally Posted by edgarspencer (Post 367583)

I took some more photos for your review. I will post in bunches.
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Dan Steingraber

07-12-2022 08:20 AM

4 Attachment(s)

Quote:

Originally Posted by edgarspencer (Post 367583)

More photos
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Dan Steingraber

07-12-2022 08:31 AM

5 Attachment(s)

Quote:

Originally Posted by edgarspencer (Post 367583)

I wiped the inside of the barrel with Hoppe's (does anything in the world smell better than Hoppe's #9?) and took a few more. BTW, The inside of the barrel feels a smooth as a baby's butt.
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edgarspencer

07-12-2022 09:09 AM

I've forgotten more than I remember in years of testing metallurgy, but the first thing I was taught was to only let the science do the talking. However, that said, the 3rd and 4th pictures of post #25 are very telling.
Eyeballs are no replacement for a scanning electron microscope, but I think it's safe to say the rupture shows great ductility of the steel and I "feel" there was no issue with the steel, and it's heat treatment. The tear at the breach end of the rupture keeps telling me there was a solid obstruction at, or just fwd of the rupture. Damn, but those striations................

Dean Romig

07-12-2022 09:58 AM

Letting the science do the talking, those “striations” could be simply the result of lateral stretching of the metal.

.

David Noble

07-12-2022 11:15 AM

Dan, can you or any witness say if the break at the wrist of the stock happened at the instant of the barrel rupture, or was it the result of the gun being dropped or flung from your hands?

Dan Steingraber

07-12-2022 11:52 AM

Quote:

Originally Posted by David Noble (Post 367616)

Dan, can you or any witness say if the break at the wrist of the stock happened at the instant of the barrel rupture, or was it the result of the gun being dropped or flung from your hands?

I can't say for sure Dave. I've discussed it with the guys I was with because I was a bit dissapointed I didn't lay the gun down instead of just droppping it. There is a pretty good sized mark on the top of the heal that indicates it hit the concrete there and if so it's likely it would have broken the stock.

Dan Steingraber

07-12-2022 12:02 PM

3 Attachment(s)

Quote:

Originally Posted by edgarspencer (Post 367583)

A couple more pics of something I hadn't noticed before. This appears to be a split initiated from the outside and is not percetible by sight or touch on the inside.
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