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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm or 30 cal? Just for curiosity’s sake
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<blockquote data-quote="Calamity" data-source="post: 2177035" data-attributes="member: 112048"><p>The difference in diameter between a .308 bullet and a .284 bullet is 0.024 inch, literally the thickness of a fingernail. If both bullets weigh 180 grains, and of equally good design, and assuming equal velocity impact, they should mushroom to about the same diameter and retained weight. So, just to stir up an argument, aside from felt recoil, can anybody cite factual (not emotional) data as to why one is better than the other in terms of destructive energy or killing power? I'm aware that there is a difference in BC and retained velocity, that has no bearing on my question. Given the above conditions, the 7mm has more reach, which is an advantage of interest to this crowd, but not the issue. I keep seeing claims that the 30's make bigger wounds, are more effective killers on larger animals. Given the conditions I cite, why would a 30 caliber bullet be more effective than a 7mm on an elk or grizzly? Looking forward to your feedback.</p></blockquote><p></p>
[QUOTE="Calamity, post: 2177035, member: 112048"] The difference in diameter between a .308 bullet and a .284 bullet is 0.024 inch, literally the thickness of a fingernail. If both bullets weigh 180 grains, and of equally good design, and assuming equal velocity impact, they should mushroom to about the same diameter and retained weight. So, just to stir up an argument, aside from felt recoil, can anybody cite factual (not emotional) data as to why one is better than the other in terms of destructive energy or killing power? I'm aware that there is a difference in BC and retained velocity, that has no bearing on my question. Given the above conditions, the 7mm has more reach, which is an advantage of interest to this crowd, but not the issue. I keep seeing claims that the 30's make bigger wounds, are more effective killers on larger animals. Given the conditions I cite, why would a 30 caliber bullet be more effective than a 7mm on an elk or grizzly? Looking forward to your feedback. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm or 30 cal? Just for curiosity’s sake
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