Nickel plated cases being porous enough to carry abrasive particles into the dies causing scratches seems a bit like flyschitt in the pepper to me. But hey, what do I know.
So I assume, you
i have used Redding dies and RCBS dies and reloaded Nickel plated once fired cases after i candle`d annealed these Nickel plated cases , then resized these cases and have never had any dies get ruined. dies are much harder metal than any brass case plated or not. i will go along with the flyshitt in the pepper thought !
and you both have experience in loading nickel plated brass?
