doublegunshop.com - home Forums General Discussion German & Austrian Sporting Guns @ doublegunshop.com Proof Marks on Franz Kettner o/u

What thickness might you have on the tube?

Serbus,


Raimey
rse

They just worked off the original stamps

How about rifling?? What might the inside of the 0.410" tube resemble?

Serbus,

Raimey
rse

Both barrels are smooth and bright with no visible traces of rifling. I have not had the thickness measured myself, but I did while googling around find a listing for this exact gun (same serial number) sold at auction in 2016. (And for a heck of a lot more than I paid for it). That listing says the bottom wall thickness is .04. In any case, I will have a local gunsmith take a look before I fire it.

https://auctions.morphyauctions.com/lot-428104.aspx

Too, a typical 0.410" slug is 7 grammes so in order to get to 16 grammes one would have to double it +2 grammes & that is out of the ballpark. So some alternation had to occur. The answer may lie with the 1926 ledger @ the Suhl Proof Facility, that is if one could access it.

Serbus,

Raimey
rse

The Morphy description stated the bore diameter of the lower barrel is .398", at the muzzle(choke). This is too small (in my opinion) for the original caliber to have been one of the Lancasters. This brings us back to the 9.3X74R, as Raimey opined in the beginning. Even if the barrel wasn't very good, it seems like a poor conversion, in spite of my opinion that the previous owner could do whatever he wanted with it.
Mike