Hello, 300ZX. No first hand experience..Do you have a rifle in this caliber? I have read where standard .38-50 brass is too thin to work in this type of chamber. If this is the case (no pun intended!), you might give Rocky Mountain Cartridge Co. a call. Their brass is turned from solid rod, on CNC lathes. They can custom fit to your chamber. I have had excellent results with their .25-21 and .25-25 Stevens brass.
