Take a look at the USFA single action "Rodeo" model. It is a fine American made(old Colt plant) revolver that closely mimics the original Colt Peacemaker at a substantially less price. As far as cartridge selection, I would go with the old workhorse---45 Colt. You can shot BP if you want, and there are plenty of good bullets and loads, both smokeless and BP, for the 45 Colt. Tom.