The Proof Research Proof Bbl Cf Blank Bolt .308 Sendero 20 1-10 delivers a precision-engineered solution for high-performance bolt-action rifles, combining a Sendero contour with a 20 inch barrel, a 1.20 inch shank diameter, and a 2.5 inch breech to optimize harmonics and accuracy across long-range encounters. Built around a caliber of .308, this barrel balances velocity retention and controlled recoil, while the 10 twist rate provides versatile stability for a wide range of ammunition, from standard match rounds to heavier projectiles, making it a dependable foundation for precision builds or upgrading an existing rifle. At a compact weight of 2 pounds 11 ounces, it maintains a streamlined profile suitable for field use and meticulous load development without adding unnecessary bulk. Ideal for precision shooters, long-range hunters, and tactical enthusiasts, the Proof Research barrel delivers consistent muzzle velocities, improved viewpoint stability, and repeatable shot strings by leveraging modern metallurgy and exacting manufacturing standards. Seamlessly integrating with compatible bolts, actions, and rifles, this component supports enhanced accuracy potential, extended barrel life, and reliable performance under demanding conditions, ensuring your setup remains ready for demanding field sessions or competitive environments.