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Long Range Hunting & Shooting
Barrel length and twist question
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<blockquote data-quote="taly01" data-source="post: 1617728" data-attributes="member: 28443"><p>The original Weatherby 300 came with 1:12 twist I believe as its so fast even with the common 180gr bullets of the 1960's it didn't need any more. There is no need having more twist than you need as it won't help accuracy, and it may overspin bullets to failure.</p><p></p><p>Berger gives comprehensive twist information. For their long .308" match bullets this may interest you.</p><p>155gr match target vld 1:14 twist minimum</p><p>210gr match target vld 1:11 twist minimum</p><p></p><p>I had a Weatherby Vanguard 300 like you, and it had the 1:10 and I used the 180gr Accubond as it needed that long bullet to reach the barrels throat before leaving the cartridge case! I am sure the shorter 150gr Accubond would be floating a bit, but I also shot 150gr alot too. I can also tell you the recoil with the 220gr is another step up!</p><p></p><p>I would go with the 1:12 of the original weatherby design <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> especially if you are staying <= 190gr.</p></blockquote><p></p>
[QUOTE="taly01, post: 1617728, member: 28443"] The original Weatherby 300 came with 1:12 twist I believe as its so fast even with the common 180gr bullets of the 1960's it didn't need any more. There is no need having more twist than you need as it won't help accuracy, and it may overspin bullets to failure. Berger gives comprehensive twist information. For their long .308" match bullets this may interest you. 155gr match target vld 1:14 twist minimum 210gr match target vld 1:11 twist minimum I had a Weatherby Vanguard 300 like you, and it had the 1:10 and I used the 180gr Accubond as it needed that long bullet to reach the barrels throat before leaving the cartridge case! I am sure the shorter 150gr Accubond would be floating a bit, but I also shot 150gr alot too. I can also tell you the recoil with the 220gr is another step up! I would go with the 1:12 of the original weatherby design :) especially if you are staying <= 190gr. [/QUOTE]
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Barrel length and twist question
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