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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Can't decide on a rifle
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<blockquote data-quote="rbTanzan" data-source="post: 1721256" data-attributes="member: 53978"><p>Yes, check the twist rate on any 308 that you consider buying or ordering. </p><p></p><p>Newly designed bullets tend to be longer, especially all copper bullets, and they require faster twists. For example, when considering a 308 in Tikka or Kimber Hunter, I chose the Kimber because the factory twist was 10", while the Tikka was a slower 11". Check out all the bullets that you want to use and then order a barrel with the appropriate twist. </p><p></p><p>My Kimber shoots 168gn TTSX nicely with the 10" barrel, and is still good with light 130gn bullets in TTSX and Hammers. That 168 grain is as heavy a bullet as I need in a .308" bore. If I want more weight I would want a more powerful caliber, like a 338WinMag.</p><p></p><p>Because the 308 has such a limited powder capacity, I really don't worry about bullets that are over 180 grains. If I were considering a magnum configuration, or even an -06, then I might check out some 190 and 200 grain bullets and would make sure that the twist was adequate. The 199gn Hammer Hunter needs a 9.25" twist, so for such bullets I would order a 9" twist barrel. The 214gn Hammer can also work in a 9" barrel and has a .322 G7-BC.</p></blockquote><p></p>
[QUOTE="rbTanzan, post: 1721256, member: 53978"] Yes, check the twist rate on any 308 that you consider buying or ordering. Newly designed bullets tend to be longer, especially all copper bullets, and they require faster twists. For example, when considering a 308 in Tikka or Kimber Hunter, I chose the Kimber because the factory twist was 10", while the Tikka was a slower 11". Check out all the bullets that you want to use and then order a barrel with the appropriate twist. My Kimber shoots 168gn TTSX nicely with the 10" barrel, and is still good with light 130gn bullets in TTSX and Hammers. That 168 grain is as heavy a bullet as I need in a .308" bore. If I want more weight I would want a more powerful caliber, like a 338WinMag. Because the 308 has such a limited powder capacity, I really don't worry about bullets that are over 180 grains. If I were considering a magnum configuration, or even an -06, then I might check out some 190 and 200 grain bullets and would make sure that the twist was adequate. The 199gn Hammer Hunter needs a 9.25" twist, so for such bullets I would order a 9" twist barrel. The 214gn Hammer can also work in a 9" barrel and has a .322 G7-BC. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Can't decide on a rifle
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