Boltman,
The answer is just shoot it more. I always "get a kick" out of figuring out the caliber of old guns and how to load for them. Of course, you could always give it to one of your friends that does enjoy it, and let him do the work for you. Right now, 8x56R cases are available that can be converted to 8x50R. Some have converted surplus 8x56R ammo to 8x50R, by pulling bullets, shortening cases, reseating bullets with a reduced charge of the salvaged powder. The bullets, however are about .006" too large, so if you are offered this type ammo you have to insure there is enough room in the neck area of the chamber to release the bullet without running the pressure up.
Mike
