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The Range
Ammo & Reloading
Foot pounds is not the end all... Calculations, Momentum and Taylor KO.
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<blockquote data-quote="swampratt" data-source="post: 2777131" data-attributes="member: 15054"><p>So I was busting some bowling pins a while back with my 357 mag and my 45acp.</p><p>The 357 mag with 170gr cast</p><p>The 45 acp with 260gr cast and 200 gr cast.</p><p></p><p>The 357 mag by calculations has more foot pounds of energy, and this I would think should pound the pin much harder and move it through the air farther.</p><p></p><p>Did not happen that way at all.. the heavy lead moving much slower moved them farther and faster.</p><p>Then I stumbled upon this calculator.</p><p></p><p> <a href="http://handloads.com/calc/quick.asp" target="_blank">http://handloads.com/calc/quick.asp</a></p><p></p><p>It calculates momentum and Taylor KO.</p><p>With those 2 calculations the heavy slower 45 acp is ahead in momentum and KO.</p><p></p><p>Which I understand Momentum.</p><p>Punch your loads into the calculator and compare them.</p><p></p><p>Yes the 260gr cast is excellent in my 45acp supposed to be 255gr , but my softer stuff comes out to 260-262gr.</p><p> <a href="http://www.midwayusa.com/product/570018/lee-6-cavity-bullet-mold-452-255-rf-45-acp-45-auto-rim-45-colt-long-colt-452-diameter-255-grain-flat-nose" target="_blank">http://www.midwayusa.com/product/570018/lee-6-cavity-bullet-mold-452-255-rf-45-acp-45-auto-rim-45-colt-long-colt-452-diameter-255-grain-flat-nose</a></p></blockquote><p></p>
[QUOTE="swampratt, post: 2777131, member: 15054"] So I was busting some bowling pins a while back with my 357 mag and my 45acp. The 357 mag with 170gr cast The 45 acp with 260gr cast and 200 gr cast. The 357 mag by calculations has more foot pounds of energy, and this I would think should pound the pin much harder and move it through the air farther. Did not happen that way at all.. the heavy lead moving much slower moved them farther and faster. Then I stumbled upon this calculator. [url]http://handloads.com/calc/quick.asp[/url] It calculates momentum and Taylor KO. With those 2 calculations the heavy slower 45 acp is ahead in momentum and KO. Which I understand Momentum. Punch your loads into the calculator and compare them. Yes the 260gr cast is excellent in my 45acp supposed to be 255gr , but my softer stuff comes out to 260-262gr. [url]http://www.midwayusa.com/product/570018/lee-6-cavity-bullet-mold-452-255-rf-45-acp-45-auto-rim-45-colt-long-colt-452-diameter-255-grain-flat-nose[/url] [/QUOTE]
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