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Long Range Hunting & Shooting
Barrel length vs velocity
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<blockquote data-quote="lancetkenyon" data-source="post: 2809706" data-attributes="member: 68875"><p>I have never researched pressure curves.</p><p></p><p>But here is my uneducated opinion.</p><p>I would think pressure curve has variations due to:</p><p>Powder selection</p><p>Powder charge weight and accuracy of charge weight</p><p>Powder burn rate</p><p>Case capacity</p><p>Case design</p><p>Brass quality</p><p>Projectile used</p><p>Chamber dimensions</p><p>Throat/lead design</p><p>Groove count and design</p><p>Barrel bore dimensions</p><p>Ambient temperature/barrel temperature </p><p></p><p>We all know longer barrels produce more velocity per inch.</p><p></p><p>I think most cartridges (.223 Wylde and 6BR for sure) have full burn within the barrel at reasonable lengths (16"+). So the only pressure curve variations would only be after the powder has fully burned and expanded gasses. </p><p></p><p>Just my thought process.</p></blockquote><p></p>
[QUOTE="lancetkenyon, post: 2809706, member: 68875"] I have never researched pressure curves. But here is my uneducated opinion. I would think pressure curve has variations due to: Powder selection Powder charge weight and accuracy of charge weight Powder burn rate Case capacity Case design Brass quality Projectile used Chamber dimensions Throat/lead design Groove count and design Barrel bore dimensions Ambient temperature/barrel temperature We all know longer barrels produce more velocity per inch. I think most cartridges (.223 Wylde and 6BR for sure) have full burn within the barrel at reasonable lengths (16"+). So the only pressure curve variations would only be after the powder has fully burned and expanded gasses. Just my thought process. [/QUOTE]
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Barrel length vs velocity
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