Weatherby ups its accuracy quotient by pairing carbon-fiber barrels with America’s most famous magnum bolt-gun platform in its newly introduced Mark V Carbonmark. The California (soon to be Wyoming) maker is equipping it flagship Mark V magnum action with 26" hand-lapped barrels made by Proof Research. Reportedly, the carbon-fiber wrap affords superior stiffness and harmonic consistency compared to traditional steel barrels of the same contour, but at 64 percent less weight. The result, when paired with a hand-laid composite stock fitted with an aluminum bedding block, is a precision-shooting, full-size magnum that tips the scale at just 7 lbs., 12 ozs. First-run Carbonmarks will be produced in three proprietary long-range chamberings—.257 Wby. Mag., 6.5-300 Wby. Mag. and .300 Wby. Mag. weatherby.com