I think its simply because federal has the military services contract and uses the exact same equipment. You might have the exact same factor in 7.62 x51 M1a things. They might be crimping since it would be the M1A. Ah hah! That clarifies why the Speer manual, from the entrance https://215-federal-primers-for-s29583.jiliblog.com/88905403/a-review-of-federal-gold-match-large-rifle-primers