I have a Palmetto made Whitney.
It's OK so far as shooting it.
Some items of comment:
The wood grips are pocked. That is, they are not smooth they have a lot of uneven tiny ..."dimples" (for lack of a better word) in them. It's a bit like they had a bad "complexion" if you will.
Upon disassembly for cleaning, I note that the nipples have washers behind them, which is something I never encountered on any other firearm. I queried members of this forum about that and was told that it's because when Palmetto drilled the holes for the nipples, they did a rough job and the wahers were to help seal the chamber.
I had no problems shooting the gun and it seems reasonably accurate. I will say that IMHO the gun was more expensive (I got mine from Dixie Gun Works IIRC) than it is really worth. I mean at the price it was offered I think it would be nice to have some good grips on it and not be required to have nipple washers which is silly.
Fratelli Pietta makes a Spiller and Burr which is a Confederate copy of the Whitney with a brass frame and they do a good job of it, so I think maybe that might be a better overall deal. That's my two cents.