The Shooting Edge has some in stock I bought 4 boxes 45 minutes ago.
.455 is easy to load. Hornady mkII brass is reasonably cheap and .454 and sometimes 452 cast lead bullets work very well in these guns. I doubt you'll find a reasonable priced box of loaded ammo anywhere....
No problems reloading the fiocchi brass and i am using a Lee Turret press
Out of sheer curiosity, how much?
I didn't have a physical problem reloading fiocch brass. I didn't like it because it's thin and doesn't hold a crimp well, very thin in the web area, and uses small pistol primers.
$50 a box it is expense but I just bought the gun and as its hard to come by I bit the bullet and bought.