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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sectional density and BC
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<blockquote data-quote="BUSTINDOGS" data-source="post: 1815689" data-attributes="member: 49798"><p>Does energy (if similar) have a great effect on killing and penetration? I thought that SD and velocity would dictate how well two bullets of the same design could penetrate.</p><p></p><p>I have been having a struggle within myself to decide weather to re-barrel my 6.5-284 into a 280 Remington or keep going with the 6.5-284...</p><p>My 6.5-284 shoots a 140 at a very accurate 2920 fps.</p><p>I want a short barreled (24") handier rifle. I really like the standard .280 Remington pushing a 160 partition for a deer/elk gun.</p><p></p><p>Me really wanting the 280, but trying to justify it. Got me thinking my 6.5 pushing a 140 a little faster than a 280 will push a 160 should be every bit as good of a killer as the 280... why not? The only thing the 280 really has over the 6.5 is the bullet being .020 bigger around... right? </p><p></p><p>I've killed deer and elk with the 6.5-284, but would the 280 kill faster, with more authority? </p><p></p><p>300 yard figures </p><p></p><p>6.5-284 140 partition @ 2920 muzzle</p><p>2366 retained velocity </p><p>1741 retained energy</p><p></p><p>.280 Remington 160 partition @ 2850 muzzle</p><p>2275 retained velocity </p><p>1839 retained energy</p><p></p><p></p><p>This is a hunting/carry gun. I have a big, heavy, long barreled 7mm SAUM that takes care of the long stuff.</p></blockquote><p></p>
[QUOTE="BUSTINDOGS, post: 1815689, member: 49798"] Does energy (if similar) have a great effect on killing and penetration? I thought that SD and velocity would dictate how well two bullets of the same design could penetrate. I have been having a struggle within myself to decide weather to re-barrel my 6.5-284 into a 280 Remington or keep going with the 6.5-284... My 6.5-284 shoots a 140 at a very accurate 2920 fps. I want a short barreled (24") handier rifle. I really like the standard .280 Remington pushing a 160 partition for a deer/elk gun. Me really wanting the 280, but trying to justify it. Got me thinking my 6.5 pushing a 140 a little faster than a 280 will push a 160 should be every bit as good of a killer as the 280... why not? The only thing the 280 really has over the 6.5 is the bullet being .020 bigger around... right? I've killed deer and elk with the 6.5-284, but would the 280 kill faster, with more authority? 300 yard figures 6.5-284 140 partition @ 2920 muzzle 2366 retained velocity 1741 retained energy .280 Remington 160 partition @ 2850 muzzle 2275 retained velocity 1839 retained energy This is a hunting/carry gun. I have a big, heavy, long barreled 7mm SAUM that takes care of the long stuff. [/QUOTE]
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Sectional density and BC
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