Perhaps true, but even 2nd tier milsurps can appreciate considerately. For example the Nagant revolver is pretty analogous to the Carcano: a firearm with a mixed reputation and very limited ammo options... but they too went from being under $100 to several hundred.I doubt it. Don't really have the popularity and reputation of the Mosin, or even the Enfield. Rightly or wrongly, they will remain a 2nd tier milsurp.
But on the other hand there's more "hype" (for lack of a better term) for Russian WW2 stuff than Italian, and that does make a difference.