they claim they are extremely accurate. they have a accuracy guarantee, but according to their product brochure it is for their carbon one custom rifle and it retails for about $2,750. they guarantee 3 shots 1/2" or less at 100 yds. they can use any action you choose to build it around. they will accurize the action of your choice and fit their carbon barrel. i don't own one but i had seriously considered one.
the carbon one hunter for $1,499 is basically your choice of a factory rifle and their carbon wrap over the machined barrel. with this combination you may or may not see an accuracy benefit over the factory rifle, but it will definitly be lighter.