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I read it as well Dave.

It appears you cant just grab a barrel, chuck it in a lathe to take some metal off it & whack some carbon fibre on it..

I'm just really curious, you read this stuff &...

It would be interesting to shoot 5-10 rounds down a Carbon barrel, followed by a conventional barrel with the same ammo & time then stick a thermocouple down the bore & see which was hotter, out side...

That's why we insulate houses & hot water cylinders etc to keep the heat in & cold out.

The carbon barrel on my CA 10 is cool to touch but the metal end cap certainly isn't.