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Carbon fiber composite is absolutely lousy at conducting heat perpendicular to the fiber. Which is why they seem to be cool, that's because it's an insulator around the (rapidly heating) steel barrel. Hence the accuracy problems.
Also, the claim that the material is so expensive (and that's why they demand a surcharge on the carbon barrels) is nonsense, aircraft grade composites cost about $20 a pound (it's up to you to calculate how much might be wrapped around a barrel).
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I used to love being able to hit hard at 1000 yards. As I get older I find hitting a mini ram at 200 yards with the 22 oddly more satisfying.
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