The Proof Bbl Cf Blank Bolt .277 24 10 Sendero from Proof Research combines precision engineering with a sleek Sendero contour to deliver a high-performance rifle barrel option for demanding shooters, blending reliability, accuracy, and rugged field performance in a compact, 3-pound package. Crafted for .277 caliber applications, this 24-inch barrel features a 10 twist rate and a breech length of 2.5 inches, ensuring stabilized performance with a wide range of projectiles while maintaining a balanced, responsive feel in the field or on the range. The shank diameter of 1.20 inches supports robust lockup and consistent bore alignment, translating to repeatable groups and enhanced durability under strenuous use. Ideal for precision builds, long-range hunting, and tactical rifles, the Sendero contour provides a proven combination of stiffness and harmonic control that helps shooters achieve tighter shot strings and reliable performance under varying environmental conditions. This barrel embodies Proof Researchs commitment to high-grade materials, meticulous machining, and field-proven performance, delivering a seamless integration into rifle platforms seeking enhanced accuracy, dependable endurance, and a professional-grade profile for serious shooters.