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Long Range Hunting & Shooting
Minimum Velocity Clarification
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<blockquote data-quote="MontanaRifleman" data-source="post: 851042" data-attributes="member: 11717"><p>You are correct and good point. That said, velocity is still factored exponentially compared to mass in the KE equation and IMO is not a viable measurement of destruction and killing potential. It does give us a vauge relative reference of the bullet's potential but that is as far as it goes.</p><p></p><p>Let's take the 22-250 example. My 22-250 will shoot 53 Vmax bullets to 4100 fps. At he muzzle, that is almost 2000 ftlbs of KE which is 33% more energy than a lot of folks say is minimum for killing elk. At 125 yds, the KE drops to the magic 1500 ftlbs requirement for elk. I would not shoot an elk at any range with this cartridge/bullet combo. Let's load the 60 Nos Partition. Let's assume an MV of 3900. The KE numbers will be very clost to the 53 Vmax. The Partition will likely penetrate much better but do we really want to shoot a large bull elk with this combo? The small hole greatly increase the odds that the bull will run off somewhere never to be found.</p><p></p><p>Now let's look at the Nos ABLR and Berger 7mm 168. With an MV of 2600 fps out of a 7-08, they have about the same energy @ 300 yds as the 22-250 bullets do @ 25 yds. Which will be the more effective killer? At 700 yds they have a velocity of about 1870 and a KE of 1300. A well placed shot through the lungs will effectively kill a bull elk. @ 950 yds the velocity is about 1604 and the KE about 1000. The Berger will probably pencil through but the ABLR will expand and penetrate both lungs and likely exit. Although probably not a highly recommended shot, the odds are it will effectively kill a large bull and one I would choose over the 22-250 @ 25 yds.</p><p></p><p>A 210 gr hardcast flat nose 44 cal bullet fire @ 1200 fps from a 44 mag will have 650 ftlbs @ 25 yds. I would choose the 44 cal hardcast bullet with 1/3 the KE of the 22-250 bullets.</p><p></p><p>KE just doesn't cut it as a determiner of killing potential.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 851042, member: 11717"] You are correct and good point. That said, velocity is still factored exponentially compared to mass in the KE equation and IMO is not a viable measurement of destruction and killing potential. It does give us a vauge relative reference of the bullet's potential but that is as far as it goes. Let's take the 22-250 example. My 22-250 will shoot 53 Vmax bullets to 4100 fps. At he muzzle, that is almost 2000 ftlbs of KE which is 33% more energy than a lot of folks say is minimum for killing elk. At 125 yds, the KE drops to the magic 1500 ftlbs requirement for elk. I would not shoot an elk at any range with this cartridge/bullet combo. Let's load the 60 Nos Partition. Let's assume an MV of 3900. The KE numbers will be very clost to the 53 Vmax. The Partition will likely penetrate much better but do we really want to shoot a large bull elk with this combo? The small hole greatly increase the odds that the bull will run off somewhere never to be found. Now let's look at the Nos ABLR and Berger 7mm 168. With an MV of 2600 fps out of a 7-08, they have about the same energy @ 300 yds as the 22-250 bullets do @ 25 yds. Which will be the more effective killer? At 700 yds they have a velocity of about 1870 and a KE of 1300. A well placed shot through the lungs will effectively kill a bull elk. @ 950 yds the velocity is about 1604 and the KE about 1000. The Berger will probably pencil through but the ABLR will expand and penetrate both lungs and likely exit. Although probably not a highly recommended shot, the odds are it will effectively kill a large bull and one I would choose over the 22-250 @ 25 yds. A 210 gr hardcast flat nose 44 cal bullet fire @ 1200 fps from a 44 mag will have 650 ftlbs @ 25 yds. I would choose the 44 cal hardcast bullet with 1/3 the KE of the 22-250 bullets. KE just doesn't cut it as a determiner of killing potential. [/QUOTE]
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