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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Twist Recommendations
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<blockquote data-quote="FEENIX" data-source="post: 2522785" data-attributes="member: 14204"><p>Brother, "IMHO," the 1:10" is too close for comfort when it comes to the SG, and it depends on altitude. For instance, Choice Ammunition from Montana load 115 Berger VLDs (<a href="https://choiceammunition.com/product/257-weatherby-magnum-115-grain-berger-vld-hunting100-hand-loaded/" target="_blank">https://choiceammunition.com/product/257-weatherby-magnum-115-grain-berger-vld-hunting100-hand-loaded/</a>) with an MV of 3240 FPS.</p><p></p><p>SG at sea level with 1:10 is 1.36 (marginal)</p><p>SG at my range altitude (3300') with 1:10" is 1.53 (barely stable)</p><p>SG at my range altitude (3300') with 1:7.5" is 2.72 </p><p>SG at my range altitude (3300') with 1:7" is 3.12</p><p></p><p>I have a 1:7" specifically built for the heavy and long high BC bullets.</p><p></p><p>Cheers!</p></blockquote><p></p>
[QUOTE="FEENIX, post: 2522785, member: 14204"] Brother, "IMHO," the 1:10" is too close for comfort when it comes to the SG, and it depends on altitude. For instance, Choice Ammunition from Montana load 115 Berger VLDs ([URL]https://choiceammunition.com/product/257-weatherby-magnum-115-grain-berger-vld-hunting100-hand-loaded/[/URL]) with an MV of 3240 FPS. SG at sea level with 1:10 is 1.36 (marginal) SG at my range altitude (3300') with 1:10" is 1.53 (barely stable) SG at my range altitude (3300') with 1:7.5" is 2.72 SG at my range altitude (3300') with 1:7" is 3.12 I have a 1:7" specifically built for the heavy and long high BC bullets. Cheers! [/QUOTE]
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