Both look to be in mm, right? Kind of interesting to look at the SN progression and dates of the DD barrels above - might not mean squat or then it might:
1853? - DD begins to serial number and date his barrels
1878 - ...????; 65 chambered in mm; 18.6; Gun Maker: Didier Fusil; Sn: ?? (damas underlever hammergun)
1885 - ..4922; ??? chambered in mm; 17.0. Gun Maker: ??; gun sn: ?? (from page 3)
1900 - ..8975; 6.5 chambered in cm; 18.4; Gun maker: Darne; gun sn??
1904 - 11046; 6.5 chambered in cm; 18.4; Gun maker: ?? gun sn:
1905 - 11604; ??? chambered in ??; 18.4; (unclear); Gun maker: ?? gun sn: ??
1906 - 11985; 7 chambered in cm; 17.0; Gun maker: Gerest Berthon; gun sn
1906 - 12075; 7 chambered in cm; 18.4; Gun maker: ??; gun sn: ??
1907?- 12537: 7 chambered in cm; 18.4; Gun maker: ??; gun sn: ?? (from next page)
1907 - 12613?; 7 chambered in cm; 18.4; Gun Maker: Geneaux; gun sn: ; (from 4th page)
1908 - 12740; 6.5 chambered in cm; 17.0; Gun Maker: ??; gun sn: ??
1910 - 13184; 6.5 chambered in cm; 18.4: Gun Maker: ??; gun sn: ??
1912 - 13689? 65 chambered in mm; 18.4: Note the 1912 shift to mm. (page 4)
1918 - 14204; 65 chambered in mm; 18.4: Gun maker: ?? gun sn: 19488; (Skeetz's gun)(doubt many shotgun barrels were made August 1914-November 1918; in fact yours might have been the first made after Nov 11, 1918? who knows...but just go ahead and claim it's true - the story makes a gun)
no date - 15035; 65? chambered i mm; 18.4: note the lack of a date; (page 4)

DD looks to have been making about 300 barrels a year from 1885 - 1910? With production/sales declining towards WWI - and probably zero 14 Aug 1014- 11 Nov 1918 for obvious reasons.

And on some of those barrels, other SN's are overlaid, possibly from the gun manufacture itself. Match up the DD barrel dates with those SN's or with the guns those barrels were mated with and voila, you have at least an early mark on their entire production.

Anyone want to construct a graph?

Last edited by Argo44; 12/23/20 06:35 PM.
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