Au contraire mon ami

! I still have the ruined steel sizer die that was totally scratched by running Remington .357 magnum nickel cases through it. First, the nickel started shedding at the casemouths. Next, the nickel started blistering along the sides of the cases. Pieces of nickel finished the job on my sizer by scratching the walls of the die. Oh yes, ALL of the cases were carefully lubed prior to resizing.
Which leads me to suggest that anyone contemplating resizing nickel handgun cases to consider using carbide dies. At least if the nickel starts to peel, it won't total your sizer die. YMMV and other opinions certainly welcomed.