Use a light amount of a different lube, ensure the shell holder is correct than measure the brass before and after to see just how much you are trying to move the brass. .002-.003 is enough beyond that will start causing problemsThe brass stays in the die and pulls out of the shellholder. The die is clean and lubed with RCBS spray lube. Any suggestions???
Finally.Lube the brass not the die... Imperial sizing wax is what I use , a tin of it will last for years.... I haven't had a stuck piece of brass since using it... Just FYI , a little goes a long way....