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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
A question about correct twist rate
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<blockquote data-quote="Beachnmountains" data-source="post: 1809676" data-attributes="member: 112790"><p>Hi Brett,</p><p></p><p>There are a few calculators out there. Barnes has one. Then a little help from the Green Hill formula could prove more detail. To JEs, point body and length are key in figuring twist. Also the type of bullet. It is fair to say metal(Barnes) require more twist than a Partition. I have a bunch of different pure copper bullets that expand for hunting. Both super and sonic. I went through 1 or 2 barrels until I had enough twist for a couple rifles. That is for down the road though.</p><p></p><p>My 300 and 338 Magnums, all 1-9" twist.</p></blockquote><p></p>
[QUOTE="Beachnmountains, post: 1809676, member: 112790"] Hi Brett, There are a few calculators out there. Barnes has one. Then a little help from the Green Hill formula could prove more detail. To JEs, point body and length are key in figuring twist. Also the type of bullet. It is fair to say metal(Barnes) require more twist than a Partition. I have a bunch of different pure copper bullets that expand for hunting. Both super and sonic. I went through 1 or 2 barrels until I had enough twist for a couple rifles. That is for down the road though. My 300 and 338 Magnums, all 1-9" twist. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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A question about correct twist rate
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