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The Range
NFA & Class III Discussion
5.56 SBRs - terminal ballistics
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<blockquote data-quote="Hump66" data-source="post: 1542117" data-attributes="member: 6655"><p>Not according to my choronograph. My buddy and I were working up some .223 loads, shot them through his 16" and my 11.5" at the time, it was an <em>average</em> of around 125fps per inch(i.e. if his were at 2800fps, mine were around 550-575fps slower.) Dropped an <em>average</em> of another 125fps when I went to the 10.3" barrel. I'm not saying it is definitely 125fps per inch, but that's an average of what I experienced with all powder brand/grain combinations. YMMV.</p></blockquote><p></p>
[QUOTE="Hump66, post: 1542117, member: 6655"] Not according to my choronograph. My buddy and I were working up some .223 loads, shot them through his 16" and my 11.5" at the time, it was an [I]average[/I] of around 125fps per inch(i.e. if his were at 2800fps, mine were around 550-575fps slower.) Dropped an [I]average[/I] of another 125fps when I went to the 10.3" barrel. I'm not saying it is definitely 125fps per inch, but that's an average of what I experienced with all powder brand/grain combinations. YMMV. [/QUOTE]
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