The cylinder is sold, thanks for the help. I have this conversion cylinder I'am going to sell that looks unused or fired, and I know about what they sell for, but I don't know exactly what caliber, who made it, although I know Howell makes most of them, or what revolver it goes to, I think to a 1858 Rem. I measured the cambers at .450/.451 a 45LC will go in perfect.
Thanks again,
Reno