OK.....
If you're set on doing this with that Dan Wesson, I believe that this is what you'll have to do:
1. Have the rear part of the cylinder milled to accept the added thickness of the full or half moon clips.
2. Headspace and retime the revolver cylinder as needed.
On the positive side, from what I've seen here on the forum, the good folks at Dan Wesson will gladly make a custom cylinder for you. Of course, it will take time--and the final cost will probably be more than a brand new revolver.
On the negative side, the moon clips themselves will be a pricey proposition--unless you know someone that can stamp them out of steel for you.
All in all, it sounds like a neat project gun. Enjoy!