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Rifles, Reloading, Optics, Equipment
Reloading
High velocity 223 AI
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<blockquote data-quote="BallisticsGuy" data-source="post: 1462127" data-attributes="member: 96226"><p>40's yeah. Lots of them. The more powder you burn & the higher the energy content the harder it'll be on your barrel throat. I have a handy little barrel life calculator that's been pretty darned good at telling me when I'd need to pitch a barrel on match rifles. I like Benchmark in .223. My calculator says with benchmark at 27-28gn and a 35gn pill you should see well over 3900fps at a near max load (55k psi) with barrel life of over 9K rounds. Powders with greater energy content like Varget cut that number to 7500. PM me if you want to race some paper and experiment with those numbers a bit for different powders.</p></blockquote><p></p>
[QUOTE="BallisticsGuy, post: 1462127, member: 96226"] 40's yeah. Lots of them. The more powder you burn & the higher the energy content the harder it'll be on your barrel throat. I have a handy little barrel life calculator that's been pretty darned good at telling me when I'd need to pitch a barrel on match rifles. I like Benchmark in .223. My calculator says with benchmark at 27-28gn and a 35gn pill you should see well over 3900fps at a near max load (55k psi) with barrel life of over 9K rounds. Powders with greater energy content like Varget cut that number to 7500. PM me if you want to race some paper and experiment with those numbers a bit for different powders. [/QUOTE]
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High velocity 223 AI
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