The Proof Research Proof Bbl Cf Blank Bolt .308 Send Light 22 1-9 combines precision engineering with a light, fast-handling profile designed for serious rifles and demanding field use, delivering the reliability of a Sendero Light contour in a compact 22-inch barrel. Built for .308 caliber, this barrel features a 9 twist rate that stabilizes a wide range of projectiles, a breech of 2.5, and a shank diameter of 1.20, all crafted to create a rigid, accurate platform when paired with the right bolt and receiver. Weighing 2 pounds 11 ounces, it balances performance and maneuverability for long-range shots, stalking setups, or competition where weight savings translate to quicker target acquisition and reduced fatigue. The sendero-inspired geometry enhances heat dissipation and stiffness, helping maintain consistent accuracy through extended strings and rugged field conditions. Ideal for precision rifle builds and upgrades, this barrel is optimized for shooters who demand dependable performance, excellent muzzle velocity consistency, and repeatable accuracy from a lightweight, durable blank that integrates smoothly with compatible bolt systems and receivers for a streamlined, high-performance shooting experience.