I agree with Native Shootist. While I love my HRA 1860, I would have no qualms about shooting any Uberti 1860. I have been shooting CAS since 1994, and in all those years have only had to replace the loading spoon on an Uberti 1866. Most of that time (probably 20 years worth) was Uberti 1860 or 1866. The rest was Marlin, Chiappa Spencer, or original 1873.
When I had an original 1873 for a couple years, I replaced links, firing pin, and two extractors.