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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Future H.A.T B.C. Test shoot
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<blockquote data-quote="MontanaRifleman" data-source="post: 358859" data-attributes="member: 11717"><p>Jon,</p><p> </p><p>If you take the caliber length of the bullet, i.e. 5.8, and multiply it by the bore caliber, .308 you will get the bullet lenght in inches, in this case 1.78". For comparison the 210 Berger is about 1.48" or 4.8 calibers. The 265 HAT is 1.785" or 5.28 calibers.</p><p> </p><p>Noel can correct me if I'm wrong, but I'm guessing the twist rate is bsed on the diameter to length ratio of the bullets (measured in calibers). The Twist for the 5.8 caliber bullets being 27 clibers (or 8.3" in a .308) and for the 6.5 caliber bullets being 18 calibers (or 5.5" in a .308) Not sure if that remains the same when going to a different bore size?</p><p> </p><p>-Mark</p><p> </p><p> </p><p> </p><p>4,08</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 358859, member: 11717"] Jon, If you take the caliber length of the bullet, i.e. 5.8, and multiply it by the bore caliber, .308 you will get the bullet lenght in inches, in this case 1.78". For comparison the 210 Berger is about 1.48" or 4.8 calibers. The 265 HAT is 1.785" or 5.28 calibers. Noel can correct me if I'm wrong, but I'm guessing the twist rate is bsed on the diameter to length ratio of the bullets (measured in calibers). The Twist for the 5.8 caliber bullets being 27 clibers (or 8.3" in a .308) and for the 6.5 caliber bullets being 18 calibers (or 5.5" in a .308) Not sure if that remains the same when going to a different bore size? -Mark 4,08 [/QUOTE]
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Future H.A.T B.C. Test shoot
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