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Rifles, Reloading, Optics, Equipment
Reloading
Load data for 180gr sst/ 308 or 30-06
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<blockquote data-quote="Bart B" data-source="post: 810209" data-attributes="member: 5302"><p>Regarding twists for 180's in .30-06 and .308 barrels, in those cartridges heyday for competition, best accuracy came with 1:11 twists in 22 inch barrels or 1:12 in 24 and 26 inch ones. The US Army used extra hot loads with 180's in their 22 inch M14NM barrels with 1:12 twists.</p><p></p><p>If ones barrel has a faster twist, I'd use reduced loads so the bullets don't spin too fast upon exit. Too high of an rpm on bullets causes accuracy to get worse; bullets tend to jump off the muzzle axis due to centrifugal forces. All bullets are not perfectly balanced. Which is why benchresters use the slowest twist possible to stabilize bullets all the way to the target.</p></blockquote><p></p>
[QUOTE="Bart B, post: 810209, member: 5302"] Regarding twists for 180's in .30-06 and .308 barrels, in those cartridges heyday for competition, best accuracy came with 1:11 twists in 22 inch barrels or 1:12 in 24 and 26 inch ones. The US Army used extra hot loads with 180's in their 22 inch M14NM barrels with 1:12 twists. If ones barrel has a faster twist, I'd use reduced loads so the bullets don't spin too fast upon exit. Too high of an rpm on bullets causes accuracy to get worse; bullets tend to jump off the muzzle axis due to centrifugal forces. All bullets are not perfectly balanced. Which is why benchresters use the slowest twist possible to stabilize bullets all the way to the target. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Load data for 180gr sst/ 308 or 30-06
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