I assume this is the one you are talking about
:
http://www.cabelas.com/product/shoot...%3FN%3D1115136
As has been pointed out, it's not a replica of any historical model. But that's up to you.
I would choose a steel-framed revolver. They are less prone to "peening" - where the cylinder slams into the frame and dents it, opening up the cylinder-to-barrel gap as a result.
The Remington New Model Army (1858) is a fine revolver. I prefer the Uberti over the Pietta as the Uberti comes with numerous added details like a dovetailed front sight to adjust for windage, a crowned barrel, and a properly-contoured loading ram face.
The Remington NMA is generally technically superior to Colt-style revolvers in that it is typically less prone to jamming from spent cap fragments and it is easier to disassemble for cleaning.
Steve