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Rifles, Reloading, Optics, Equipment
Reloading
Do you consider Sectional Density when choosing a bullet?
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<blockquote data-quote="Hand Skills" data-source="post: 2259190" data-attributes="member: 103303"><p>Sectional Density matters in a world of non expanding solids, but throw expanding bullets into the mix and it goes out the window.</p><p></p><p>In the context of terminal performance, SD is becomes dynamic and drastically diminishes as a bullet mushrooms (increases diameter) and fragments (loses mass).</p><p></p><p>Then there is the problem of materials. Tungsten, copper and lead all have very different densities, yet all.308 200gr bullets have the same SD - doesn't matter what they are made of. Compare a 200gr copper mono to a 200gr Hornaday RN interlock. The all copper bullet is significantly longer, and has significantly more displacement.</p><p></p><p>We see time and time again that bullet construction plays more of a part in penetration than mass.</p></blockquote><p></p>
[QUOTE="Hand Skills, post: 2259190, member: 103303"] Sectional Density matters in a world of non expanding solids, but throw expanding bullets into the mix and it goes out the window. In the context of terminal performance, SD is becomes dynamic and drastically diminishes as a bullet mushrooms (increases diameter) and fragments (loses mass). Then there is the problem of materials. Tungsten, copper and lead all have very different densities, yet all.308 200gr bullets have the same SD - doesn't matter what they are made of. Compare a 200gr copper mono to a 200gr Hornaday RN interlock. The all copper bullet is significantly longer, and has significantly more displacement. We see time and time again that bullet construction plays more of a part in penetration than mass. [/QUOTE]
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Reloading
Do you consider Sectional Density when choosing a bullet?
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