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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Left hand barrel twist?
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<blockquote data-quote="Frank in the Laurels" data-source="post: 1172292" data-attributes="member: 8845"><p>I don't know where I read it but the idea of counter balance to spin drift is left hand twist. The article's premice was that a .308 bullet at 1000 yards depending on velocity would drift to the right around 2-4 inches and that military snipers were already using left hand twist to off set the spin affect..it's just about the same amount, interesting...maybe it was on the snipers hide forum.. I didn't even know they made left twist barrels, maybe they are only offered to military use, don't know. I've spent most of my years shooting out to 500 yards and always blamed the shift of impact on winds not spin drift and it was usually an inch or so with PPC's or BR's...lighter slower bullets than the big 30's. Geeezzz now I got something else to think about...never ends !!</p></blockquote><p></p>
[QUOTE="Frank in the Laurels, post: 1172292, member: 8845"] I don't know where I read it but the idea of counter balance to spin drift is left hand twist. The article's premice was that a .308 bullet at 1000 yards depending on velocity would drift to the right around 2-4 inches and that military snipers were already using left hand twist to off set the spin affect..it's just about the same amount, interesting...maybe it was on the snipers hide forum.. I didn't even know they made left twist barrels, maybe they are only offered to military use, don't know. I've spent most of my years shooting out to 500 yards and always blamed the shift of impact on winds not spin drift and it was usually an inch or so with PPC's or BR's...lighter slower bullets than the big 30's. Geeezzz now I got something else to think about...never ends !! [/QUOTE]
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Left hand barrel twist?
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