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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Twist for .257
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<blockquote data-quote="AZShooter" data-source="post: 2108858" data-attributes="member: 5219"><p>Interesting topic. With an 85 gr nosler varmint ballistic tip Nosler's load data page says you can get 3825 fps from a 257 weatherby. With a 1 in 7.5 twist that would yield 367,200 RPMs. Nosler says: "Nosler® Ballistic Tip® Varmint bullets thrive on ultra-high velocity loads". Would love to hear what happens if you choose to try them. </p><p></p><p>To date I have not had a single 55 Nosler BT varmint bullet come apart from a 6mm-284 @ 4200 fps 326,918 RPM. </p><p></p><p>Who knows maybe 367,200 RPM would be too much. </p><p></p><p>I can guarantee if you choose a mono or a bonded bullet you won't have to worry.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 2108858, member: 5219"] Interesting topic. With an 85 gr nosler varmint ballistic tip Nosler's load data page says you can get 3825 fps from a 257 weatherby. With a 1 in 7.5 twist that would yield 367,200 RPMs. Nosler says: "Nosler® Ballistic Tip® Varmint bullets thrive on ultra-high velocity loads". Would love to hear what happens if you choose to try them. To date I have not had a single 55 Nosler BT varmint bullet come apart from a 6mm-284 @ 4200 fps 326,918 RPM. Who knows maybe 367,200 RPM would be too much. I can guarantee if you choose a mono or a bonded bullet you won't have to worry. [/QUOTE]
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Twist for .257
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