44 auto mag

[Catfish]

Brass sould be reltively easy to make. I would cut it with a tubeing cutter, a hair long and trime it an a case trimer. I use a Layman trimer with an elect screw driver for trimming cases. It`s alot faster and more accurate than useing the crank. You could also use any of the cases with the standard .473 case haed and body dia. ie. 06 .308, 243, 22-250 ect.