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Originally Posted By: shinbone
fallschirmjaeger - yes, it is a Gunbroker find. It caught my attention because I am a sucker for a lightweight 16ga SxS.


Aren't we all!

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Shinbone:

Glad you're getting some of the info you needed here. Your gun appears to be a really good find. That weight is pretty spectacular, what is the LOP and barrel length? Also, if you have any questions about the barrels, bring it down to the shop and we can check wall thickness. I'm there Fridays these days. Our digital scale also easily converts to metric so we can see how the weight compares to the original stamping.

It sure reminds me of a VL&A Knockabout, but if it were a Francotte it would be marked on it somewhere.

Last edited by Lloyd3; 11/20/17 03:08 PM.
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Originally Posted By: treblig1958
I see. So we need that 'date code' stamp for a positive date?


You won't get a date code stamp on that gun. With the exception of a couple years (1922-23?), Belgian guns with the gauge over C in a diamond were made before date codes were in use. If this gun had 16-65 in a sort of sideways horseshoe (there's another term for that?), then it would date from 1924 or later and there would be a date code. The change from the gauge over C to the gauge/chamber length as a proofmark gives you a rough split in production date. Then you start looking for the date code, which will always be there on Belgian guns with the later proofmark.

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Lloyd - Thanks for the offer. I will definitely take you up on checking wall thickness. I am hunting this Friday, and so will swing by the next Friday (12/1).

Dimensional info:

Barrels are stamped 1238.6





Last edited by shinbone; 11/20/17 07:09 PM. Reason: photos added
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Weight 1.2386 kilograms

or

2.73064558 pounds

for the barrels

Last edited by skeettx; 11/20/17 05:24 PM.

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Thanks Larry. Thanks Doc Drew. That explains it. I was beating my brains out trying to figure out why no date stamp. That gauge designation stamp used from 1898 to 1924. Looked right past it.

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Larry's sideways horseshoe thingie (or 'Omega reclining' wink )
p = 1937


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Just added some more photos, one showing the current weight of the barrels at 1179g. Barrels are stamped at 1238.6, which means 60g of metal has been removed from the barrels since being proofed.

When I do a quick calculation using an average density for steel, the thickness of 60g of metal removed from the diameter of just one bore of these barrels would come to 0.072 thousandths. Meaning a negligible change in wall thickness from proof.

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I'd be interested in more info on how you calculated that.

That's a 5% weight loss. Seems pretty significant to me.

Remember the barrel tubes don't make up the entire weight of the set.

Are we sure the stamped weight is after final striking?




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Originally Posted By: shinbone


When I do a quick calculation using an average density for steel, the thickness of 60g of metal removed from the diameter of just one bore of these barrels would come to 0.072 thousandths. Meaning a negligible change in wall thickness from proof.


You might want to check your calculation again because .072" is .005" greater than the difference between a 12 gauge and a 16 gauge bore. That is hardly a negligible difference.


A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.

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