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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300wm twist
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<blockquote data-quote="Gord0" data-source="post: 1469687" data-attributes="member: 99696"><p>Agree with this 100% You actually see this a lot with a very short range cartrige, the 300 blackout. They're are a lot of barrel manufacturers that have 7 twist barrels because you don't have the rpm at subsonic velocity to stabilize the really long bullets. </p><p>There's 2 ways to get more rpm. Spin it faster with a faster twist rate, or give it more velocity. More rpm will also result in larger temporary cavity and more shock. Extreme rpm on a weaker constructed bullet gives spectacular results on varmints. The different effects that I listed above being caused by more rpm are caused by a faster twist rate, or higher velocity. With enough twist rate, you wouldn't need a hollow point to initiate expansion. Hydraulic shock into the hollow point just makes it easier.</p></blockquote><p></p>
[QUOTE="Gord0, post: 1469687, member: 99696"] Agree with this 100% You actually see this a lot with a very short range cartrige, the 300 blackout. They're are a lot of barrel manufacturers that have 7 twist barrels because you don't have the rpm at subsonic velocity to stabilize the really long bullets. There's 2 ways to get more rpm. Spin it faster with a faster twist rate, or give it more velocity. More rpm will also result in larger temporary cavity and more shock. Extreme rpm on a weaker constructed bullet gives spectacular results on varmints. The different effects that I listed above being caused by more rpm are caused by a faster twist rate, or higher velocity. With enough twist rate, you wouldn't need a hollow point to initiate expansion. Hydraulic shock into the hollow point just makes it easier. [/QUOTE]
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300wm twist
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