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Hunting
Long Range Hunting & Shooting
? on 6.5 saum build
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<blockquote data-quote="lilharcher" data-source="post: 1180520" data-attributes="member: 83227"><p>I'm building one right now too and posed some of these same questions to my smith (GAP). I went with the 8.7 twist, but you can also go to Berger's website and use their twist calculator to optimize twist based on your conditions (elevation and temp). Some are now saying a gain twist may be best (ie - starting at 8.7 and gaining to 8.2 for example). Like mentioned by Sendero though, you should be good in most situations with 8.7 twist.</p><p> </p><p>As for reamer, if you will only be using the new Hornady Brass, I highly suggest the neck turn reamer at .296.......hornady brass is ~.261.</p></blockquote><p></p>
[QUOTE="lilharcher, post: 1180520, member: 83227"] I'm building one right now too and posed some of these same questions to my smith (GAP). I went with the 8.7 twist, but you can also go to Berger's website and use their twist calculator to optimize twist based on your conditions (elevation and temp). Some are now saying a gain twist may be best (ie - starting at 8.7 and gaining to 8.2 for example). Like mentioned by Sendero though, you should be good in most situations with 8.7 twist. As for reamer, if you will only be using the new Hornady Brass, I highly suggest the neck turn reamer at .296.......hornady brass is ~.261. [/QUOTE]
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