I find that corrosive ammo is not that much harder to clean after than regular, only that you have to use a water-based cleaner (or water) at some point to dissolve the salts - normal solvents won't work.
I was given an M91/38 a few years back, and that started my whole military surplus collection. Without really trying I've wound up with three Mosins - the afore-mentioned 91/38 and two run-of-the-mill 91/30s.