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I suspect the answer may be a 20 bore x 40mm or 50mm. I shortened a 20 gauge Cheddite case to 2" (50 mm) and it fit right against the throat/lands. I took a few .610 pure lead balls and carefully flattened them in a smooth vise until they measured .642. I found a Cowboy Action Load for 20 gauge that pushed 3/4 oz of shot to 1000 fps at around 6000 psi. Since the balls weighed 330 gr (almost exactly 3/4 oz) I loaded 5 rounds with a powder charge reduced 1 grain, used the base of a BP 20 gauge wad as a gas seal and pressed in a resized and lubed ball. I had forced a lubed ball through the bore and it engraved and passed through easily. I measured the ball I pushed through and the groove diameter was .645-.646. I fired two of these offhand at a makeshift target at 25 yds and they functioned well, the recoil is light and they shot to point of aim. This may well have been a 40 mm cartridge, because even with black powder and conventional wadding, the case is ridiculously long at either 2" or 2-1/4". I just ordered some balls cast .648 and some 18 gauge wads which fit the MagTech brass. I will shorten the brass to something between 40 and 50 mm and use appropriate cushion wads to seat the ball flush with the case mouth. I think it will work perfectly.

I did notice in trying the gun that there appears to be be barrel bands around the breech, along with Sauer Suhl, both in Platinum or silver. Also, these barrels ar steel, which I think is pretty early for those.

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Yes steel & the term >>Guß-Stahl<< should be stamped on them somewhere.

Serbus,

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I looked into the 1904 DWM catalog and I would call it Kugelpatrone Kal. 20; DWM case 67 (40.40 mm long).

(Kugelpatrone = Ball cartridge)

Cheers,
Jani

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Thanks Jani for popping and and too for providing me the term for which I was seraching: Lankaster Kugelpatrone Kalibre 20.

Serbus,

Raimey
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Originally Posted by AGS
Anyone know the proper name for this setup? Anyone seen one before? I am at a loss on this. Wouldn't be the first time.
Turd with a stock ?

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Not even in German

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Originally Posted by ellenbr
Yes steel & the term >>Guß-Stahl<< should be stamped on them somewhere.

Serbus,

Raimey
rse

It is actually inlayed in Platinum along with a ring on the breech of the barrels.

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Originally Posted by HomelessjOe
Originally Posted by AGS
Anyone know the proper name for this setup? Anyone seen one before? I am at a loss on this. Wouldn't be the first time.
Turd with a stock ?

Here's a quiz:

20.89%

0.33%

Somebody with a grade school diploma explain this to him. Maybe he will wait until he has something of any value or interest to say before typing.

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I am highly confident that the bar stock for making the tubes was sourced from Guß-Stahl-Fabrik Carl Berger & Compagnie.

Axel E. on Berger & Colt Peacemaker steel...... - GußStahl:

>>The Gusstahlfabrik (cast steel factory) Carl Berger&Co, later Gusstahlwerk Witten AG, then led by Carl's son Louis Constans Berger, in the 1860s pioneered the use of barrel steel. Besides providing the steel for the Dreyse needlerifles of the Franco-German war of 1870-71, they exported lots of barrel steel to the USA in the early 1870s. Among these exports were large amounts of special-order, large diameter round stock. Their main American customer was Colt in Hartford. So your "all American" Colt Peacemaker most likely has a barrel and cylinder made of Witten steel!<<

https://www.doublegunshop.com/forum...ords=Monopole&Search=true#Post212298

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Just an update. The 20 bore by 40 mm is almost certainly correct. I had measured as best I could and got a measurement of 2" to the start of the rifling. I cut down some 2-1/2" Cheddite hulls to 2" and they worked great. I even fired three of them. However, when I tried today with 20 gauge brass shells, the gun wouldn't lock up. I had to cut the brass shells off to about 1.85 inches to get a completely smooth closing action. The 40 mm would be around 1.585" and would allow the ball to patially protrude from the case mouth with a reasonalble BP load. I am going to shorten 10 or so to this length, load them with .646" pure lead balls at about 1100 and try for accuracy. The recoil of the 330 gr balls I tried ws very mild.

Thanks for the help. I new someone here would be able to dig up the answer.

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