Use the same method to reload nickel plated and plain brass cases. I have about 2,000+ .38 Special cases, about 10% are nickel plated. Some have been reloaded so much the nickel is worn thin in spots and the brass shows through. In 30+ years of reloading I may have had one case that flaked nickel, and no more neck splits than any other non-plated brass. I have on occasion loaded some hefty loads under 158 gr. LSWC in nickel cases, but again have noticed no difference...
They work fine, until they crack. Mine cracked far quicker than plain brass. The plating makes them slightly thicker. I noticed they went through the resizing die a little harder.