Howdy to the camp,
I just had an opportunity to use R&Ds 45 Colt 5 shot conversion cylinder in a Uberti 1860 Army. I got it from Taylor's to do an article on. Iy worked flawlessly, even though it is a five shot cylinder on a six shot gun (how do they do that<g>). It did shoot 8" high at 15 yards, but many 1860s do.
It is SASS legal, as the cylinder locks in place between cylinderss in lieu of an empty chamber. It does this the same way a Richards Conversion with 12 locking lugs locks it inbetween chambers. It has ten locking slots, and it iocks into an "in between" slot. It is not as easy to use as a Remington R&D, as you have to break apart the whole gun to load (love them Remmie conversions<g>
ANOTHER NICE FEATURE ON IT AND THE NEW 1858 CYLINDERS IS THE WITNESS HOLES ADJACENT THE CASE RIMS! That way you can see which chamber is empty.