bullet velocity mile

  1. Flechette

    How long does a rifle bullet take to travel a mile?

    I know that the muzzle velocity of a 20mm Lahti is about 2600 ft/sec, but it starts to slow down as soon as it leaves the barrel. So how long does it take to go a mile? How about a .50 cal? Does it take longer? .338 Lapua?
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