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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hornady 7mm 180g .796 bc
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<blockquote data-quote="Edd" data-source="post: 1278934" data-attributes="member: 30592"><p>Copper is less dense so a bullet of the same weight is longer. A longer bullet OAL will require more twist. If the bearing surface is lengthened, that material has to come from somewhere. It will likely come from the OAL length and result in a shorter bullet. </p><p></p><p>This is not something I know enough about to be teaching. I have read about this and remember some of what I've read. I believe it is in one of Bryan Litz's books. There is a point on the nose of the bullet acts like a lever against the back of the bullet with the bullets center of gravity being the fulcrum. The closer those two points are to each other the easier the bullet is to stabilize.</p></blockquote><p></p>
[QUOTE="Edd, post: 1278934, member: 30592"] Copper is less dense so a bullet of the same weight is longer. A longer bullet OAL will require more twist. If the bearing surface is lengthened, that material has to come from somewhere. It will likely come from the OAL length and result in a shorter bullet. This is not something I know enough about to be teaching. I have read about this and remember some of what I've read. I believe it is in one of Bryan Litz's books. There is a point on the nose of the bullet acts like a lever against the back of the bullet with the bullets center of gravity being the fulcrum. The closer those two points are to each other the easier the bullet is to stabilize. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Hornady 7mm 180g .796 bc
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