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Hunting
Long Range Hunting & Shooting
Barrel length and twist question
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<blockquote data-quote="MontanaRifleman" data-source="post: 1617587" data-attributes="member: 11717"><p>The physical bullet factors that determine a required twist are it's mass, cal (sectional density) and length. Environmental factors are velocity, altitude and temp. Temp is not that important. Stability factor (SG) is a value that describes how stable the bullet is based on the above and the twist of the bore. Berger has an online SG calculator.</p><p></p><p><a href="https://bergerbullets.com/twist-rate-calculator/" target="_blank">https://bergerbullets.com/twist-rate-calculator/</a></p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 1617587, member: 11717"] The physical bullet factors that determine a required twist are it's mass, cal (sectional density) and length. Environmental factors are velocity, altitude and temp. Temp is not that important. Stability factor (SG) is a value that describes how stable the bullet is based on the above and the twist of the bore. Berger has an online SG calculator. [URL]https://bergerbullets.com/twist-rate-calculator/[/URL] [/QUOTE]
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Barrel length and twist question
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