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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Light, high BC bullet
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<blockquote data-quote="Warren Jensen" data-source="post: 20883" data-attributes="member: 21"><p>Dave,</p><p></p><p>The reason you don't see lightweight high BC bullets is pretty much the same reason you don't see Winston Cup Champions racing in cars that cost $2000. Money and speed go hand in hand. Ballistic efficiency and weight go hand in hand.</p><p></p><p>BC is the ratio of a bullet's sectional density to it's coefficient of form. Sectional density is the weight per cross sectional area. A high BC bullet that is lightweight would have to have a form factor that would make the bullet impractical. It's ogive would be greater than 30 calibers and to keep the weight down it would have to be made from something less dense than steel. (That long ogive increases the weight) It would have very unusual twist requirements. You would have to design your firearm around it. </p><p></p><p>If you are serious about this I will run a design that will try to get you an 80 gr., 308 bullet with a BC of over 1.00. Warning, it won't look like a bullet.</p></blockquote><p></p>
[QUOTE="Warren Jensen, post: 20883, member: 21"] Dave, The reason you don't see lightweight high BC bullets is pretty much the same reason you don't see Winston Cup Champions racing in cars that cost $2000. Money and speed go hand in hand. Ballistic efficiency and weight go hand in hand. BC is the ratio of a bullet's sectional density to it's coefficient of form. Sectional density is the weight per cross sectional area. A high BC bullet that is lightweight would have to have a form factor that would make the bullet impractical. It's ogive would be greater than 30 calibers and to keep the weight down it would have to be made from something less dense than steel. (That long ogive increases the weight) It would have very unusual twist requirements. You would have to design your firearm around it. If you are serious about this I will run a design that will try to get you an 80 gr., 308 bullet with a BC of over 1.00. Warning, it won't look like a bullet. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Light, high BC bullet
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