Thanks for the info, guys. Pumpkinheaver - "DOH!" I totally forgot about my Blue Press catalogs! I knew I had seen the stuff somewhere.
I found a company online that sell it by the 1000 and 2000 round cases, but it is the berdan-primed surplus. That'll get me started shooting, til I can get set-up to reload.
I heard that about shooting 9mm Luger too, but not in my shiny new gun!! I'll use the proper ammo.