These are preferred guns among the N-SSA shooters of the 1863 Remington AKA the Zouave. The workmanship is generally considered to be much higher grade than the average Italian repro. It takes much less tunig to make it a great shooter. I have owned several and have let them go to new shooters on the team.
It is not made anymore so it is generally considered a keeper.
Not sure of this, but some folks I trust think the "Zouave" title became connected to this model as part of the Sears marketing campaign in the 1960's and 70's. Since the gun was only issued, if at all, in small quantities and no reference to Zouave appears in the official records of any Arsenal reports, this seems logical.
If anyone else has other information, I would like to hear it.