My 1858 Remington replica is an old Army San Paolo (now Euroarms?) that serves well for the little use it gets. The only other BP revolver I have shot is a Ruger Old Army. I can easily recommend the ROA over the ASP, 'though it does not meet your interest in historical arms.
Regardless of what you buy, I strongly recommend the Lyman Black Powder Handbook
The last Dixie Gun Works catalog
I bought was a treasure, with much good material on BP shooting and many surprising oddball items salted throughout: well worth the price.