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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger hybrid 30 cal. 215 hybrid for hunting
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<blockquote data-quote="DocUSMCRetired" data-source="post: 1155168" data-attributes="member: 85458"><p>Twist rates are not universal, but the recommendations are. What works for someone at high altitude, may not work for someone shooting at sea level. It is best to keep in mind that published twist rates are designed to work for everyone, where as some shooters can fine tune based on location, and their objective. To quote "The new twist rate recommendations that Berger Bullets is offering are based on achieving optimal stability in nominal conditions. This means that the twist rates that they provide may seem conservative and the Berger recommendations for twist rates may be faster than what you actually need in your environment."</p><p></p><p>Here is a good article on it: <a href="http://www.abmediaresources.com/articles/ABDOC108_GyroscopicAndCoriolis.pdf" target="_blank">http://www.abmediaresources.com/articles/ABDOC108_GyroscopicAndCoriolis.pdf</a> </p><p></p><p>Also remember that just because you don't meet the recommended doesn't mean something catastrophic might happen. As a rule of thumb, you lose about 3% BC for every .1 you go below an SG of 1.5. Some are better, some are worse. But you don't necessarily lose stability, and I wouldn't expect a catastrophic failure.</p></blockquote><p></p>
[QUOTE="DocUSMCRetired, post: 1155168, member: 85458"] Twist rates are not universal, but the recommendations are. What works for someone at high altitude, may not work for someone shooting at sea level. It is best to keep in mind that published twist rates are designed to work for everyone, where as some shooters can fine tune based on location, and their objective. To quote "The new twist rate recommendations that Berger Bullets is offering are based on achieving optimal stability in nominal conditions. This means that the twist rates that they provide may seem conservative and the Berger recommendations for twist rates may be faster than what you actually need in your environment." Here is a good article on it: [url]http://www.abmediaresources.com/articles/ABDOC108_GyroscopicAndCoriolis.pdf[/url] Also remember that just because you don't meet the recommended doesn't mean something catastrophic might happen. As a rule of thumb, you lose about 3% BC for every .1 you go below an SG of 1.5. Some are better, some are worse. But you don't necessarily lose stability, and I wouldn't expect a catastrophic failure. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Berger hybrid 30 cal. 215 hybrid for hunting
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