Originally Posted by
sinister
Factory 168 Match King Fed Gold Medal Match out of a 24-inch 1-12 barrel starts having trans-sonic stability issues at around 875 yards in the summer at 300 feet above sea level. A 175 will have issues just short of 1,000 if you're using a 1-11 or 12 twist.
For 1,000 yards with a Sierra 175 you generally want 2550 fps muzzle velocity (or better) with a 1-10 twist. A 16-inch tube (even with a tight twist) will be around 2475, and the Lapua 17 and 175s will be around 2485.
I'll third this. Pappabear's 16" LMT 10 twist gas gun will shoot 168s to 1000 yards, but my 20" bolt gun with 12 twist fans them out over about a 12 yard radius. 12 twist/168s/transonic is a bad combo for me.
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
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