Once Again, THANK YOU, Driftwood
Seems like you've provided a boatload of information addressing questions I've asked and even ones I haven't! Those are the ones that have formed in my head as this thread has gone on.
I certainly appreciate all this help, Mister Johnson, and I get the feeling that I'm not the only one who has benefited from your comprehensive posts.
The only thing left to do at this point is to order a conversion cylinder and I've already done that! I decided to buy one of Taylor's made for the Uberti 1860 Army replicas.
And YES, thank you for catching the velocity vs. pressure issue, I understand your point yet find myself duplicating the bad thinking that goes into the accepted advertising (as well as "common") language without thinking.
Best Regards - MoW