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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
215gr Berger Hybrid in the 308Win
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<blockquote data-quote="MontanaMarine" data-source="post: 736665" data-attributes="member: 268"><p>Stability has to be right at the edge, and I would think ther lower velocity of the 20.5" tube is likely a factor. I figure at 2600 fps in the 26" tube it is getting about 4% more RPM.</p><p></p><p>I ran the numbers through the stability calculator on the JBM website, they are definitely at the bottom end of the 'marginal' category.</p><p></p><p>2500fps/30F/25.5Hg - 1.029</p><p></p><p>2600fps/30F/25.5Hg - 1.042</p></blockquote><p></p>
[QUOTE="MontanaMarine, post: 736665, member: 268"] Stability has to be right at the edge, and I would think ther lower velocity of the 20.5" tube is likely a factor. I figure at 2600 fps in the 26" tube it is getting about 4% more RPM. I ran the numbers through the stability calculator on the JBM website, they are definitely at the bottom end of the 'marginal' category. 2500fps/30F/25.5Hg - 1.029 2600fps/30F/25.5Hg - 1.042 [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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215gr Berger Hybrid in the 308Win
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