No clue the LP. But, buddy and I split 1500 of the SR Mil primers. I haven't tried them yet, but he tells me they are slightly over-sized, and only really work in Mil cases...
Reason I ask is over sized will work in my dillon with socket on top of the low primer indicator rod but won't go thru my vibra prime tube filler gizmo. I don't like filling tubes by hand.