purchased a lot of milsurp once fired brass from tjconeveras. Running the brass through a redding 308 FL sizing die previously using a RCBS small base die, the brass is tumbled and lubed with lyman quik lube. The problem here is sizing is very difficult, alot of stuck cases pulling off the rim, the cases will stick occasionally on the upswing but mostly on the downswing. Can anyone help me out here? The redding die is brand new and the RCBS has seen a ~ 500rnds. I'm concerned that the tough sizing is going to take a toll on my 550b, I can already see play developing in the arm. Can anyone help me out here?