Yea, you don't resize the case, just the neck. I have a No1MkIII and a No4Mk2 and keep the brass separated for the rifle that fired it. I have bought a crate + of 7.62x54r for the very reason of pulling the projectiles (I don't even own a Nagant). Some here have said to reduce the factory Russian load by 10% case volume and you have a good range load for the .303Br reloading with the russian powder as well as the bullet. I was intending on mixing the Russian powder into the garden myself...the savings on the projectiles themselves made the purchase worthwhile believe it or not.
If the Russians are manufacturing .303Br we MUST get Canam on this and revive the noble Enfield in Canada, and hear the rifle range bark of victory once again on our shores(Hows that for pulling on the Patriot heartstrings?)...If that isn't motivation, an Importer should know that if it's priced right, it will fly off the shelves. Most if not all Canadian rifle shooters own an Enfield.
Maybe there's some surplus for those refurb Ross rifles??