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Hunting
Long Range Hunting & Shooting
257-300 prc
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<blockquote data-quote="can1010" data-source="post: 2727287" data-attributes="member: 43193"><p>the 135 class can make an honest 3500fps in 7 twist that's 360,000rpm. well above what most can handle. haven't tied the 145BH bullets but 3300fps should be obtainable that's still 340,000rpm. in a 7 twist. Even Kirby Allen ran a 10 twist on his 257 AM for cup and core. </p><p>what is your 257 WBY capacity most are 83gr. the 300 PRC case will be 94gr. range. your WBY is closer to the sweet spot.</p></blockquote><p></p>
[QUOTE="can1010, post: 2727287, member: 43193"] the 135 class can make an honest 3500fps in 7 twist that's 360,000rpm. well above what most can handle. haven't tied the 145BH bullets but 3300fps should be obtainable that's still 340,000rpm. in a 7 twist. Even Kirby Allen ran a 10 twist on his 257 AM for cup and core. what is your 257 WBY capacity most are 83gr. the 300 PRC case will be 94gr. range. your WBY is closer to the sweet spot. [/QUOTE]
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Hunting
Long Range Hunting & Shooting
257-300 prc
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