Probably not much of a market for it.
In a very similar and rather multipage thread on another gun forum there was a lot of talk about how they have been tried at various times but the revolver population just turned their noses up at them and stuck with their classic .38Spl and .357Mag rounds saying that the 9mm did nothing that these others could not do just as well or better.
But I have to wonder if the times are changing. A moon clip set up revolver would be a very sweet proposition. First off the cylinder can be shorter but it may need to be a little thicker walled to deal with the chamber pressures that are every bit up to .357Mag pressures and then some. The shorter cylinder would make for a more compact main frame for smaller concealed carry guns in the US that could then work with slightly longer barrels. Mind you that won't help us up here at all unless they produced some 4.2 or longer barrels.
A moonclip of 9mm is a LOT more compact than a speedloader of .38Spl. Also the shorter the round the more automatically they just self center and "flop" into the cylinder instead of have to be fumbled a little to start and then pushed in.
So all in all I see nothing but benifits for a revolver that uses moonclips full of 9mm rounds. But sadly the industry doesn't agree with me.


















































