Doesn't seem there's been an import of these for a couple of years, so we're not seeing them in store inventory, only what comes up as trade-in, consignment, or classifieds. I need an Izhevsk one for my Izhevsk collection, they only made those for a couple of years during the Great Patriotic War. Seen more than a few Tulas; they're out there to get.
Unless you're looking for an 1895 Nagant, in which case I wish you luck in locating a first year of production. Tsarist examples are tough.
Ammo is weird stuff, but it's out there, and site sponsors have both complete and re-loading components.