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The Range
Ammo & Reloading
Why does muzzle velocity increase with barrel heat
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<blockquote data-quote="druryj" data-source="post: 2189385" data-attributes="member: 10465"><p><img src="/images/smilies/image1030.gif" class="smilie" loading="lazy" alt=":teach:" title="Image1030 :teach:" data-shortname=":teach:" />The application of Charles law here makes perfect sense to me: The question is:<em> "Why does muzzle velocity increase with barrel heat"</em> What we have is an instance where <u>volume</u> is a relative constant, and <em>heat</em> is increased rather quickly within that somewhat constrained volume, caused by the rapidly burning gases following ignition of the powder within that constrained volume; resulting in an increase in the only variable left: <em>Velocity.</em> Think of it like this: A scuba tank is filled to a certain pressure, measured in psi, and is left to sit in the heat of the sun, what is the variable that increases? Pressure (Within the constrained volume of the tank).</p><p></p><p>Make sense?</p><p></p><p>There's not any liquid involved in this instance but if you will study the effects of pressure or heat on liquids, it is indeed much different.</p></blockquote><p></p>
[QUOTE="druryj, post: 2189385, member: 10465"] :teach:The application of Charles law here makes perfect sense to me: The question is:[I] "Why does muzzle velocity increase with barrel heat"[/I] What we have is an instance where [I][/I][U]volume[/U] is a relative constant, and [U][/U][I]heat[/I] is increased rather quickly within that somewhat constrained volume, caused by the rapidly burning gases following ignition of the powder within that constrained volume; resulting in an increase in the only variable left: [U][/U][I]Velocity.[/I] Think of it like this: A scuba tank is filled to a certain pressure, measured in psi, and is left to sit in the heat of the sun, what is the variable that increases? Pressure (Within the constrained volume of the tank). Make sense? There's not any liquid involved in this instance but if you will study the effects of pressure or heat on liquids, it is indeed much different. [/QUOTE]
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Why does muzzle velocity increase with barrel heat
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