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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sectional density and BC
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<blockquote data-quote="Mikecr" data-source="post: 1815644" data-attributes="member: 1521"><p>I'm definitely not a terminal ballistics expert, but in my consideration:</p><p><u>Sectional Density</u>: <em>A bullet's weight in pounds divided by the square of its diameter in inches." Note that SD is independent of a bullet's shape. All bullets of the same caliber and weight will have the same SD, regardless of their shape or composition.</em></p><p>So for similar SD from different cal bullets, the weights must be different.</p><p></p><p>Different weights at same speed produce different knockdown energies.</p><p>Same build, SD, and velocity, but different cal and energy, affects penetration.</p><p>Many believe the point of impact and construction are primary to all else.</p><p>I personally believe the most powerful of ALL ballistic attributes is accuracy.</p><p></p><p>So I would choose a bullet known to be sufficient, while providing the most lethal point of impact(best accuracy) for a given system, and sleep well with this.</p><p>I've dropped whitetail deer so fast they still don't know they're dead, at over 500yds, with flat base 40gr 22cal thin-skinned BR bullets. Brain shots</p><p>Would that work with Elk? At ~100yds, yes. No problem.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1815644, member: 1521"] I'm definitely not a terminal ballistics expert, but in my consideration: [U]Sectional Density[/U]: [I]A bullet's weight in pounds divided by the square of its diameter in inches." Note that SD is independent of a bullet's shape. All bullets of the same caliber and weight will have the same SD, regardless of their shape or composition.[/I] So for similar SD from different cal bullets, the weights must be different. Different weights at same speed produce different knockdown energies. Same build, SD, and velocity, but different cal and energy, affects penetration. Many believe the point of impact and construction are primary to all else. I personally believe the most powerful of ALL ballistic attributes is accuracy. So I would choose a bullet known to be sufficient, while providing the most lethal point of impact(best accuracy) for a given system, and sleep well with this. I've dropped whitetail deer so fast they still don't know they're dead, at over 500yds, with flat base 40gr 22cal thin-skinned BR bullets. Brain shots Would that work with Elk? At ~100yds, yes. No problem. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Sectional density and BC
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