I know this is probably a long shot but, I looking to buy a set of old Herters Dies for a .401 power Mag.
I would be happy if I can find even the seat crimp die. If anyone has them and willing to sell let me know.
I LOADED A TON of 401 ammunition with a set of RCBS CARBIDE 10MM DIES. RCBS made a roll crimp die for me. BUT, the standard 10MM seat/t/c crimp die worked perfectly well also.