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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Browning X-Bolt Hell's Canyon Long Range Rifle - Using 1 turn in 7" for 6.5 Creedmoor
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<blockquote data-quote="HaroldNRAEndowment" data-source="post: 2318392" data-attributes="member: 111610"><p>There seems to be some misconception for terms for some people. I think that maybe some people associate the higher number with a fast twist and a lower number with a slow twist. The correct terminology is a 1 Turn in 7" is a faster twist( creates a higher RPM at a fixed velocity) than a 1 Turn in 8"(a slower RPM at the same velocity). Lower the number the faster the twist ( and higher RPM at the same velocity). 1 Turn is 1 Revolution. I think the misconception comes from knowing about threads on fasteners. Once you get to 0 turns in so many inches that is a straight spline, but then when one crosses over in the other direction an let us say 16 threads per inch and compare that to a higher number of 18 threads per inch, then the 18 threads per inch is a faster twist than 16 threads Being 16 Turns(16 revolutions) in 1 inch.</p><p>Best Regards</p></blockquote><p></p>
[QUOTE="HaroldNRAEndowment, post: 2318392, member: 111610"] There seems to be some misconception for terms for some people. I think that maybe some people associate the higher number with a fast twist and a lower number with a slow twist. The correct terminology is a 1 Turn in 7" is a faster twist( creates a higher RPM at a fixed velocity) than a 1 Turn in 8"(a slower RPM at the same velocity). Lower the number the faster the twist ( and higher RPM at the same velocity). 1 Turn is 1 Revolution. I think the misconception comes from knowing about threads on fasteners. Once you get to 0 turns in so many inches that is a straight spline, but then when one crosses over in the other direction an let us say 16 threads per inch and compare that to a higher number of 18 threads per inch, then the 18 threads per inch is a faster twist than 16 threads Being 16 Turns(16 revolutions) in 1 inch. Best Regards [/QUOTE]
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Browning X-Bolt Hell's Canyon Long Range Rifle - Using 1 turn in 7" for 6.5 Creedmoor
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