was sizing some 30cal M1 Carbine brass the other day,have probably reloaded 13 or 14 thousand rounds of the stuff and have come across some berdan primed brass. headstamp is @ 12:00 4-62 should be date,3:00 is B over D, 6:00 is 7.62 is caliber,and 9:00 is V over E. any one know where this stuff came from. thanks jwr