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215gr Berger Hybrid in the 308Win

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Old 12-25-2012, 09:08 AM
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Re: 215gr Berger Hybrid in the 308Win

Originally Posted by MontanaMarine View Post
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
I didn't expect those numbers at all.
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