I am recently switching all of my regular .45ACP to nickel 45ACP. When im depriming the centers of some of the primers are the only thing that comes out. The outside of the primer remains in the brass. I have never had this problom before. Could it be that the Nickel brass has just setup so long. Its not every peice of brass just enough to be annoying. Is there any cure for this other than to just chunk the brass that doesnt deprime completly? This brass is once fired from a police range Factory Winchester..