I think its simply because federal has the armed forces contract and employs the exact same machines. You could have precisely the same thing in 7.62 x51 M1a stuff. They may be crimping because it is definitely the M1A. In the early eighties, Wisconsin's Chippewa tribe claimed a treaty proper https://andresevgsd.tblogz.com/the-2-minute-rule-for-federal-large-rifle-magnum-primers-215-45718435