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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Is my twist rate OK for my 7mm??
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<blockquote data-quote="MontanaRifleman" data-source="post: 754712" data-attributes="member: 11717"><p>How do you know you have a 10 twist? Have you actually measured it? The typical factory twist for the 7 RM is 9 1/4 - 9 1/2. If it's a custom barrel, it may have been made for a specific bullet in the 140 or 150 gr range. If you're getting good groups with the 160 AB's, then stick with it.</p><p></p><p>You say the 160 AB SF is 1.40 vs the 168 VLD of 1.65? That is VERY odd, as it would imply the 160 AB is much longer than the Berger 168. Not possible or factual. Maybe you made an input error?</p><p></p><p>Don't drink the Nosler BC Koolaid, their BC is BS.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 754712, member: 11717"] How do you know you have a 10 twist? Have you actually measured it? The typical factory twist for the 7 RM is 9 1/4 - 9 1/2. If it's a custom barrel, it may have been made for a specific bullet in the 140 or 150 gr range. If you're getting good groups with the 160 AB's, then stick with it. You say the 160 AB SF is 1.40 vs the 168 VLD of 1.65? That is VERY odd, as it would imply the 160 AB is much longer than the Berger 168. Not possible or factual. Maybe you made an input error? Don't drink the Nosler BC Koolaid, their BC is BS. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Is my twist rate OK for my 7mm??
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