Quote:
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QuickLoad says a 36" barreled .22-250AI firing a 30gr Barnes Varmint Grenade could hit 5,077fps at just 57,000psi.
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Question:
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 .....