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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
300 blk
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<blockquote data-quote="LouBoyd" data-source="post: 513254" data-attributes="member: 9253"><p>Here's a comparison of the ballistics of a 220 grain SMK fired from a 300 BLK and a 30-06. I used the 30-06 instead of a 308 because a 220SMK won't comfortably fit in a 308 short action rifle.. They do fit nicely in a 30-06 in a Rem 700 long action. Conditions are standard metro.</p><p></p><p>Cartridge ---------------- 300 BLK-----------------30-06</p><p>Rifle ----------------------- AR-15 -------------------Rem 700 LA</p><p>bullet-----------------------220SMK-----------------220SMK</p><p>Barrel-----------------------16 in --------------------22 in</p><p>MV---------------------------1025 fps*--------------2425 fps **</p><p>Velocity @ 100------------990 fps----------------2291f ps</p><p>Velocity @ 400------------908 fps ---------------1914 fps</p><p>Energy @100-------------479 ft-lb---------------2566 ft-lb</p><p>energy @ 400------------402 ft-lb----------------1790 ft lb </p><p>10mph wind @100------0.9 in--------------------0.6 in</p><p>10mph wind @400-----13.81in-----------------10.6 in</p><p>drop @ 100 ---------------16.9 in ------------------3.1 in</p><p>drop @ 400 --------------289.3 in-----------------55.1 in</p><p></p><p>* 1025 is not max but about optimum for stable subsonic performance </p><p>** 2425 is about a 90% max load with H4350 powder.</p><p></p><p>What's better? That depends on what you're trying to accomplish.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 513254, member: 9253"] Here's a comparison of the ballistics of a 220 grain SMK fired from a 300 BLK and a 30-06. I used the 30-06 instead of a 308 because a 220SMK won't comfortably fit in a 308 short action rifle.. They do fit nicely in a 30-06 in a Rem 700 long action. Conditions are standard metro. Cartridge ---------------- 300 BLK-----------------30-06 Rifle ----------------------- AR-15 -------------------Rem 700 LA bullet-----------------------220SMK-----------------220SMK Barrel-----------------------16 in --------------------22 in MV---------------------------1025 fps*--------------2425 fps ** Velocity @ 100------------990 fps----------------2291f ps Velocity @ 400------------908 fps ---------------1914 fps Energy @100-------------479 ft-lb---------------2566 ft-lb energy @ 400------------402 ft-lb----------------1790 ft lb 10mph wind @100------0.9 in--------------------0.6 in 10mph wind @400-----13.81in-----------------10.6 in drop @ 100 ---------------16.9 in ------------------3.1 in drop @ 400 --------------289.3 in-----------------55.1 in * 1025 is not max but about optimum for stable subsonic performance ** 2425 is about a 90% max load with H4350 powder. What's better? That depends on what you're trying to accomplish. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
300 blk
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