The Proof Bbl Cf Bolt .308 16.5 Sendero from Proof Research combines carbon fiber construction with a precise 16.5-inch Sendero contour to deliver a lightweight, high-strength barrel option for serious shooters. Calibrated for .308 caliber, this barrel features a 10 twist rate, a compact 2.5 inch breech length, and a 1.20 inch shank diameter, all designed to maximize accuracy and reliability in a performance-driven rifle platform. Weighing around 2 pounds 6 ounces, the carbon fiber finish reduces weight without compromising stiffness, supporting quicker follow-up shots and improved balance during field work or match bench sessions. The 16.5 inch length strikes a balance between maneuverability and velocity retention, making it well-suited for a variety of setups where a compact, rigid barrel is essential. With its Sendero contour, the barrel promotes consistent harmonics and predictable points of impact across a range of loads, helping hunters and precision shooters achieve tight groups in the field or on the range. The result is a durable, high-performance barrel that enhances overall rifle efficiency and accuracy.