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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
220 Swift, twist rate, barrel length
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<blockquote data-quote="dig" data-source="post: 1152484" data-attributes="member: 26939"><p>I own a Remington 220 Swift, old rifle, by measurement looks to be a 1/14 twist. It's will not stabilize bullets in the 70 plus range (tried various manufactures) Accuracy is ok at 100 and then goes to hell at 2-300. It's marginal with the 69 grain Sierra MK and deadly with the 62 grain Sierra. It's been my experience that velocity does help with heavier bullets in looser twists but you need to test and test at 300 plus, to ensure stability. I have had the best luck with heavy for twist (supposedly) with Barnes. Lots of tails out there test for yourself.</p></blockquote><p></p>
[QUOTE="dig, post: 1152484, member: 26939"] I own a Remington 220 Swift, old rifle, by measurement looks to be a 1/14 twist. It's will not stabilize bullets in the 70 plus range (tried various manufactures) Accuracy is ok at 100 and then goes to hell at 2-300. It's marginal with the 69 grain Sierra MK and deadly with the 62 grain Sierra. It's been my experience that velocity does help with heavier bullets in looser twists but you need to test and test at 300 plus, to ensure stability. I have had the best luck with heavy for twist (supposedly) with Barnes. Lots of tails out there test for yourself. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
220 Swift, twist rate, barrel length
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