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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Why use a carbon wrapped barel?
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<blockquote data-quote="UniqueUserName" data-source="post: 2071029" data-attributes="member: 92845"><p>As a Level-III thermographer, I agree with what you are saying. To cool a barrel, heat must be transferred from the bore to the surface via thermal conduction. Steel is a much better thermal conductor than carbon fiber, especially when the heat must travel transverse to the fiber. Once heat is conducted to the surface it is dissipated via radiation and convection (some via conduction into the stock/chassis where there is contact). Carbon fiber has a greater emissivity than most steel surfaces so once heat makes its way to the surface it will radiate more rapidly.</p><p></p><p>Carbon fiber will provide a cooler surface temperature for both reasons listed above, but that has absolutely no bearing on bore temperature, which is what matters. If one wants to know how effective each type is at cooling, they must measure bore temp, not surface temp. I too would like to see this fantastical, "classified" study and hear the details of exactly what "physics" this person is employing in his analysis.</p><p></p><p>P.S. I have a hunting rifle with a carbon fiber wrapped barrel and like it plenty, but it's not the one I would choose for sustained rate of fire if I wanted it to last. I like both steel and CF wrapped, but each has its own advantages and disadvantages, based on application.</p></blockquote><p></p>
[QUOTE="UniqueUserName, post: 2071029, member: 92845"] As a Level-III thermographer, I agree with what you are saying. To cool a barrel, heat must be transferred from the bore to the surface via thermal conduction. Steel is a much better thermal conductor than carbon fiber, especially when the heat must travel transverse to the fiber. Once heat is conducted to the surface it is dissipated via radiation and convection (some via conduction into the stock/chassis where there is contact). Carbon fiber has a greater emissivity than most steel surfaces so once heat makes its way to the surface it will radiate more rapidly. Carbon fiber will provide a cooler surface temperature for both reasons listed above, but that has absolutely no bearing on bore temperature, which is what matters. If one wants to know how effective each type is at cooling, they must measure bore temp, not surface temp. I too would like to see this fantastical, "classified" study and hear the details of exactly what "physics" this person is employing in his analysis. P.S. I have a hunting rifle with a carbon fiber wrapped barrel and like it plenty, but it's not the one I would choose for sustained rate of fire if I wanted it to last. I like both steel and CF wrapped, but each has its own advantages and disadvantages, based on application. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Why use a carbon wrapped barel?
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