I find the Nagant revolver a fine little plinker, as fun and nearly as cheap to shoot as a rimfire. I handload using the .32-20 cases in the Lee Nagant die set. It is very easy to load for, and with the low pressures, my 300 cases should last the rest of my shooting life.
This all presupposes one doesn't get anal about the gas sealing - the .32-20 case is far too short for it. I just load it so the bullet doesn't protrude from the cylinder face, like any other standard revolver load.
At approximately 750FPS, it's no powerhouse, but it's great fun with steel swinger targets (cast lead bullets only!) and death to any soda can within 30 yards.