Just an FYI since brass is hard to find lately….,if you don't scrounge up some you could most likely neck up some 7 RM cases to get you by. I d use no more than once fired brass if it was me and run the cases through a 30 cal taper expanded and follow up with a F/L 338 win sizer. Make sure brass is lubed well and might even want to anneal after first sizing step to 30 cal.
Just an idea to get you by if necessary ….. Good Luck!