Originally, the No. 7 revolver was built in 11 mms Spanish Ordnance, which cartridge is almost equal to the German 10,4 mm Reichsrevolver. A .44 Russian will fit into either, but has been proven to be a bit too powerful, so beware.
PS: Concerning the "44 Cal" marking on the barrel, what about the .44 S&W American, the predecessor of the .44 Russian?
Carcano
PS: Concerning the "44 Cal" marking on the barrel, what about the .44 S&W American, the predecessor of the .44 Russian?
Carcano