You might call (208 687 2231) or write Ponsness Warren, S. 763 Hwy 41, Rathdrum, Idaho, 83858. Talk to Brian Steele. I have a 375c single stage which has been modified to load this cartridge. I did some machine work myself, but P-W provided most of what was needed.
Like other U.S. reloading equipment makers, P-W makes tooling which works best with U.S. designed arms. Chambers on most American designed arms usually have a head end diameter at least a thousandth or two over SAMMI minimum. Before you call, you might want to check the chambers on your gun. I am assuming that it is of English origin. If, like many English guns, the chambers are cut right on the minimum tolerance, be sure to let P-W know. The holder/die needs to be sized to produce cartridges which have adequate clearance in your gun.
Bob
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