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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Twist
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<blockquote data-quote="Katbird" data-source="post: 283358" data-attributes="member: 14358"><p>Veritas,</p><p>Your twist rate selection has a lot to do with what other rifles you own. My 7-08AI wears a 22" #2 Shilen Stainless Match barrel with a 1:11 twist. When I called Shilen about the project and told them I would only be shooting bullets 140gr and lighter, they recommended the 11 twist for higher velocity and better accuracy potential. I use my 300WinMg for any game that a 140gr 7mm can't handle. </p><p>The 10 twist will stabilize bullets up to 160gr. 7mm Weatherby Mags used to have a 10 twist, but they reportedly would not stabilize all 175gr bullets well.</p><p></p><p>Since I can easily get over 3000fps from my little 22" barrel and accuracy averages a hair under .5MOA, I couldn't be happier with my selection. Your desire for a 280AI with a 10 twist sounds good to me.</p></blockquote><p></p>
[QUOTE="Katbird, post: 283358, member: 14358"] Veritas, Your twist rate selection has a lot to do with what other rifles you own. My 7-08AI wears a 22" #2 Shilen Stainless Match barrel with a 1:11 twist. When I called Shilen about the project and told them I would only be shooting bullets 140gr and lighter, they recommended the 11 twist for higher velocity and better accuracy potential. I use my 300WinMg for any game that a 140gr 7mm can't handle. The 10 twist will stabilize bullets up to 160gr. 7mm Weatherby Mags used to have a 10 twist, but they reportedly would not stabilize all 175gr bullets well. Since I can easily get over 3000fps from my little 22" barrel and accuracy averages a hair under .5MOA, I couldn't be happier with my selection. Your desire for a 280AI with a 10 twist sounds good to me. [/QUOTE]
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7mm Twist
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