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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel rate of twist
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<blockquote data-quote="Gerard Schultz" data-source="post: 946841" data-attributes="member: 51"><p>The spec for a 300WM is 1:10" twist. A 12" twist turns it into a paper and steel rifle and it is not a hunter unless you limit the distance by using shorter bullets. </p><p></p><p>The twist calculator on the Berger page works very well with jacketed lead core bullets. It does not do well with turned copper bullets. For turned copper, use this calculator which works with any type of bullet construction.</p><p></p><p><a href="http://www.nanotechprojectiles.com/#?book=Thrusts&chapter=Ballistics&page=TwistRate&paragraph=Mccoy" target="_blank">NPS Home</a></p></blockquote><p></p>
[QUOTE="Gerard Schultz, post: 946841, member: 51"] The spec for a 300WM is 1:10" twist. A 12" twist turns it into a paper and steel rifle and it is not a hunter unless you limit the distance by using shorter bullets. The twist calculator on the Berger page works very well with jacketed lead core bullets. It does not do well with turned copper bullets. For turned copper, use this calculator which works with any type of bullet construction. [url=http://www.nanotechprojectiles.com/#?book=Thrusts&chapter=Ballistics&page=TwistRate¶graph=Mccoy]NPS Home[/url] [/QUOTE]
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Barrel rate of twist
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