Muzzle velocity to remain super sonic at 1000 yards

B

Bill Daniel

New member
What muzzle velocity is needed to keep a 0.308" 175 grain SMK super sonic at 1000 yards, elevation 2300 ft above sea level.
Thanks,
Bill
 
Using the BRL drag function for that bullet, under ICAO standard conditions for that altitude (27.52 in Hg, 50.8°F, 0% RH), for which the speed of sound is 1108 fps, it takes 2461 fps to just hit the speed of sound at 1000 yards, so anything over that should be good.
 
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