Originally Posted by
jmart
If barrel length is 22-24", 1 in 9" might stabilize 75-77 grain bullets given the added velocity. If barrel is shorter, you need to look for 1 in 8" or quicker to be safe.
I'd pose this question at Sniperhide or 6mmBR.com to get an answer from folks who have probably plowed this ground before. Asking a predominantly carbine board won't get you much "hands on" advise.
My 1/9 twist Colt Accurized Rifle does great with 77 gr. However, it is a 24" barrel.
By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest. - Confucius
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