I am a tech junky so looked into the carbon fibre barrels with lots of interest when they first came out. What I found was dissapointing but not the fault of the carbon fibre.
The basis for the barrel is still a CM or SS steel barrel. All that has happened is that the barrel is turned down and carbon fibre wrapped around it. My understanding is that most used Shilen reg. barrels not their top of the line match barrel, so the accuracy will be limited from the start.
The idea of carbon fibre has merrit, it just has not been excecuted in the best possible manner. It is also way more money to manufacture today then a true all steel match barrel. Maybe someone will figure out a way to cermic coat the interior so that a steel liner is not necessary. Now that would be an improvement...maybe.
Good luck...
Jerry