and those flakes are hard enough to scratch dies and chambers.
2 thin layers of brittle nickel with soft pliable brass in between. it has to eventualy let loose.
nickel brass is good for its intended purpose, thats carrying for years and still be functional, thats why it was first used by professional hunters, in the big stopping cartridges.
I loaded a few WSSM cases awhile back, started to flake on the third loading, it was then trashed.
RR