The Proof Research Proof Bbl Cf Bolt 7mm BC 20 Sendero Lone Peak DI delivers a precision-ready barrel solution for demanding long-range bolt-action builds, combining proven CF (carbon fiber) barrel technology with a Sendero contour that balances stiffness and weight for consistent performance. This 20-inch barrel clocks a precise 8 twist rate, optimized for stability with 7mm BC rifles and a broad range of high-velocity match and hunting loads, while the 5/8-24 muzzle thread enables secure attachment of suppressors or muzzle devices. Weighing in at 2 pounds 10 ounces, the profile provides a rigid yet manageable feel in the hand, helping shooters maintain repeatable shot placement across strings. Crafted by Proof Research, this barrel is designed to enhance accuracy, barrel life, and consistency in precision rifle applications, making it an ideal choice for serious shooters upgrading a builder project or refining a dedicated long-range rig. Its Sendero contour supports excellent external ballistics and heat management during extended sessions, helping you reach farther with confidence and stability on the trigger.