If carbon wrapped barrels were really as good as people claim they would be everywhere. There are serious flaws to the theory and they were all beaten to death in an earlier thread. Basically, carbon fiber is a better insulator than steel. You have a very thin steel barrel liner wrapped in insulation. The company likes to tout the barrel as being slow to heat up. This is true, in a sense. The barrel in it's entirety is slow to heat up btu that is a function of the insulation (CF Wrapping) in fact, the barrel liner gets hotter faster than a conventional barrel would and retains the heat longer. We all know that barrel heat, particularly in the throat, is the enemy of barrel longevity. Too, once hot the barrel will stay hot longer, again thanks to the insulation. This means that where you would normally feel the barrel getting hot after 5 rounds of 300WM (say doing load development) with a conventional steel barrel, it will take longer for the same amount of heat to reach the surface of a CF-wrapped barrel. I don't know exact figures but I would estimate 15-20 rounds for the same surface heat. I think that knowledgeable riflemen and handloaders would concur that running 20 rounds through a 300WM without letting the barrel cool is not going to do the throat any favours. And if a person was to buy into using a CF-wrapped barrel to build a lightweight varmint rifle for high volume prairie dogs they would either have to build three to allow two to cool while you shot the third one, or accept the fact that a 22-250 would eat the liner out of the barrel in 1000 rounds, if not much less.
Now, this is not to say that a CF-wrapped barrel does not have it's advantages. They are very light and very stiff so the rifle should be accurate and would make a 24" or 26" barreled magnum a delight to carry. But the flip side is increased recoil and more difficulty in having the rifle "settle down" on target, particularly after climbing or running (flyweight rifle owners can confirm this phenomenon).
So all in all the concept of wrapping a barrel in carbon fiber is an interesting one but, in my opinion, more a marketing gimmick than a truly beneficial innovation, and this is evidenced by their scarcity.
