There is advanatages and disadvatages to everything. Nickel plated brass is harder,and must be FL. resized when virgin brass and deburred both inside and out. Then with a good chamfer on the inside your bullets will seat a little easier. But the brass beibg harder they will seat a little harder and must be done in a slower motiion. Nice since they don,t oxidize like brass will. Some people like shiny brass & they seem to cycle better in most firearms. vangunsmith