1. I have a hard time finding time to shoot much less hand load.
2. I know 8x57 is strong enough to do most any thing. This especially true with Euro or surplus ammo. Surplus ammo is corrosive and you can't go to just any store to pickup Euro or surplus ammo.
3. I was just thinking of doing something a little different in 8mm if possible with as little work as possible. The idea cartrige would also be widely available.