Seems no-one has an opinion, so I'll jump right in, (again).
Just tried the 1860 stock against my ROA, and quite a bit of engineering would have to take place on either item.
When finished, it brings the cylinder, and all the attendant powder flash, smoke and exploding caps, very, very close to the only pair of eyes you will ever have.
I pass on that one,,,, I think I will keep them at arms length!!
(Who said chicken??)
AE