Posted 24 February 2005 - 08:39 PM
Probably possible, probably cost-prohibitive.
Converting to an available cartridge would involve redesign of the hammer, addition of a firing pin, probable re-lining and rechambering of the cylinder, and most likely relining the barrel (7mm is about .284 caliber) to match a modern low-pressure cartridge like the .32 Colt or .32 S&W. Then there's the metallurgy designed for black powder pressures. The cost of such modifications would far outweigh the benefits derived from such a conversion. Also, the value of the gun would probably NOT increase.
I'd suggest you give the old revolver an honorable retirement. It's a nice old piece with, unfortunately, little collector's value.