IN my experience nickel plated cases have two drawbacks, #1 Nickel is porous by nature and prone to carry abraisive particles into the dies and scratch them, #2 Nickel is subject to hydrogen embrittlement thus reducing case life by splitting at the neck. I only use nickel plated cases to load cartridges that will be carried in a leather cartridge belt. The nickel plated cases won't form verdigris from contact with the leather.