Thread: Worlds fastest?
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Old November 19, 2012, 10:17 PM   #8
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Join Date: October 4, 2007
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Posts: 8,151
QuickLoad says a 36" barreled .22-250AI firing a 30gr Barnes Varmint Grenade could hit 5,077fps at just 57,000psi.

How slow a twist would the barrel have to be to keep the rotational forces on that bullet from making it go (POOF!) and flying apart? I have heard of light (40gr) .220 Swift bullets doing that at 4K .....
TheGolden Rule of Tool Use: "If you don't know what you are doing, DON'T."
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