the old sr-71s speed is still classified. but a pilot at a seminar where i live said that if you shot a 30-.06 ( ammo from a M1 garand) in california at the same time a 71 flew by....the 71 would beat the bullet to washington DC by 5 minutes....the given is the 30-.06 round would not lose any energy. the muzzle velocity for that round is ( depending on the bullet) 3000 to 4000 feet per second. and that was from a plane made in the 50s.... i think they are not giving you the real upper end of this ac.... i would bet it is way higher.
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