I know the problem isn't the steel-cases. They are Boxer-primed, and I've reloaded hundreds of Wolf and Tula steel-cases and run the reloads through the same LMT without issue. My loads were approaching 5.56mm NATO pressures though.
White Box Manufactured: 07/09 (I'm not sure if that's European for September, 2007, or if it's July, 2009)
Lot: 7Q5 4