I haven't loaded for any of them, but I'm told that the WSSM cases are very thick. That would seem to indicate extra heavy forces in sizing and expanding the neck, so proper lube is vital.
It also might mean shorter case life, as normal work hardening could result in cracking a bit earlier with thicker necks. That's just a surmissal, though.
From what I read, they seem to work best at near-maximum pressures. Load workup is uninspiring until very near max for that gun.
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