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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Beast from Allen Precision Shooting!!!
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<blockquote data-quote="Fiftydriver" data-source="post: 1613641" data-attributes="member: 10"><p>I fully believe that bullet weight has A LOT more to do with BC then most believe. If you take two bullets of the exact same external design, one made of light brass alloy and the other made of a heavier alloy, the heavy bullet of same external dimensions will have a higher BC then the lighter bullet of same external dimensions.</p><p></p><p>So, yes, form is great but without mass, BC will suffer. This is one reason why smaller caliber solid bullets have such a hard time making high BC numbers, just can not get enough mass in the smaller calibers. This is not just Hammer bullets, its all solids. There is a reason why Barnes bullets do not have very high BCs compared to same weight lead core conventional bullets.</p><p></p><p>That said, the smaller caliber Hammer bullets, because of their design, can often be driven to 150 fps faster then same weight lead core bullets making up for the lower BC out to impressive ranges. Plus the terminal performance of the Hammer bullets is such that you can use a lighter bullet in the Hammer bullets and get the terminal penetration of a much heavier lead core bullet. I have found a faster then conventional twist is a good idea for straight penetration after impact but the ability to use a lighter bullet adds even more to the velocity advantages.</p><p></p><p>Once you get in the 338 bore size and larger, now you can get the mass needed to get serious BC numbers and in the larger calibers above 375, its the only way to go, much better balance of weight and length but rest assured, bullet mass has a significant amount to do with BC numbers, especially as ranges increase.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 1613641, member: 10"] I fully believe that bullet weight has A LOT more to do with BC then most believe. If you take two bullets of the exact same external design, one made of light brass alloy and the other made of a heavier alloy, the heavy bullet of same external dimensions will have a higher BC then the lighter bullet of same external dimensions. So, yes, form is great but without mass, BC will suffer. This is one reason why smaller caliber solid bullets have such a hard time making high BC numbers, just can not get enough mass in the smaller calibers. This is not just Hammer bullets, its all solids. There is a reason why Barnes bullets do not have very high BCs compared to same weight lead core conventional bullets. That said, the smaller caliber Hammer bullets, because of their design, can often be driven to 150 fps faster then same weight lead core bullets making up for the lower BC out to impressive ranges. Plus the terminal performance of the Hammer bullets is such that you can use a lighter bullet in the Hammer bullets and get the terminal penetration of a much heavier lead core bullet. I have found a faster then conventional twist is a good idea for straight penetration after impact but the ability to use a lighter bullet adds even more to the velocity advantages. Once you get in the 338 bore size and larger, now you can get the mass needed to get serious BC numbers and in the larger calibers above 375, its the only way to go, much better balance of weight and length but rest assured, bullet mass has a significant amount to do with BC numbers, especially as ranges increase. [/QUOTE]
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