DittoI have reloaded lots and lots of nickel .40S&W brass with no problems to speak of.
SOme people think you can scratch your dies it the Nickel flakes off. IMO it's not a concern. Tool steel and Carbide are much harder than Nickel.
edit.....Joe-nwt beat me.
Never take advice from that person ever again.I have heard that you cannot reload with nickle plated winchester brass for some reason. Is there any truth to this?