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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm-08 twist
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<blockquote data-quote="longrangehunterII" data-source="post: 1010984" data-attributes="member: 61185"><p>I had a Weatherby Vanguard 243 Win. , (Howa 1500 action made in Japan) that was re-barreled by Hart Rifle Barrels that shot 1 1/2" groups @ 300 yards with the 160 NAB @ 2725 and the 168 SMK in the 2600-2500 range. The 168's were really slow using N140, had used H414 that produced a little faster speed but the last lot of powder wouldn't group as well.</p><p></p><p>That said I think anything over the 168's would be way too slow moving to be any benefit to using them in the first place. ie: faster speed to make up for the lower BC vs. higher BC going slower.</p><p></p><p>You could do a 7mm-08 Ackley Improved and gain maybe 5% increase in velocity, but you might be better served to just chamber to a 260 Remington instead?</p></blockquote><p></p>
[QUOTE="longrangehunterII, post: 1010984, member: 61185"] I had a Weatherby Vanguard 243 Win. , (Howa 1500 action made in Japan) that was re-barreled by Hart Rifle Barrels that shot 1 1/2" groups @ 300 yards with the 160 NAB @ 2725 and the 168 SMK in the 2600-2500 range. The 168's were really slow using N140, had used H414 that produced a little faster speed but the last lot of powder wouldn't group as well. That said I think anything over the 168's would be way too slow moving to be any benefit to using them in the first place. ie: faster speed to make up for the lower BC vs. higher BC going slower. You could do a 7mm-08 Ackley Improved and gain maybe 5% increase in velocity, but you might be better served to just chamber to a 260 Remington instead? [/QUOTE]
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