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Old October 24, 2012, 05:31 PM   #9
tobnpr
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Join Date: August 1, 2010
Location: Tampa Bay
Posts: 2,759
2600 fps with the 168 SMK out of a 20" barrel is easily accomplished. 2700 isn't unheard of.

JBM shows that bullet at 0 degrees centigrade, sea level, 29.92 in Hg, as still supersonic (1148 fps) at 900 yards.

It's still 1196 at 800 yards at zero degrees Fahrenheit.

Not much less (1158) at 20 below zero.

No temp on this planet that'll keep a 168 SMK from being supersonic from a 20" barrel past 600 yards.
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