View Full Version : 6.5x55 velocity
nrar15
07-23-2011, 06:57 PM
What muzzle velocity do I need to stay supersonic at 1000yrs with 140 and 142 SMK's in 6.5x55?
THANKS
Bob
According to my Sierra program. 2200 fps will get you to 1048 yds. with the SMK's and 1079 yds. with the Berger's. At sea level.
nrar15
07-23-2011, 09:32 PM
Thanks Stu, for some reason I thought it was around 2600 fps
Maybe someone else can chime in and check what i came up with because i thought it would be 2600 or so also. 2200 sounds slow to still be supersonic @ a grand. But, they are some slippery ass bullets (aerodynamically speaking.)
According to the same program they'll stay ss to almost 1600 yds. if you push them at 2900 fps.
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