Early model springfields under 250k ish for springfield and under 850k for the other pre ww1 maker cant remember the name off hand are subject to reciever failure.
All serial numbers above 900,000 are safe
Modern 30-06 is designed to be safe in pressure set by the 1903 springfields.
Modern 30-06 is not safe to use in unmodified m1 garands. The operating rods can be bent if they dont have a schuster type plug installed
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith