For my .44 caliber guns. All three take .431" boolits and have done great with pan lubed ones. Ordered the top punch and .431 die from Brownells and the press from Amazon. Feeding my Model 24, Super Blackhawk and Henry single shot will be easier now with less fooling around. I tumble lube my gas checked 30 cal boolits and powder coat my 9mm and 38's.