The Proof Research Bbl Cf Blank Bolt .264 26 Sendero 1-7.5 delivers precision craftsmanship for serious long-range enthusiasts, combining Proof Researchs renowned engineering with a Sendero contour that balances rigidity and portable handling. This .264 caliber barrel measures 26 inches in length with a 7.5 twist rate, optimized for stable stabilization of high-BC projectiles across a wide velocity range, making it ideal for precision rifles and long-range pursuits. The barrel breech is 2.5, and the shank diameter is 1.20, details that contribute to consistent chamber alignment and dependable muzzle-to-bore uniformity. At a weight of 3lbs-5oz, it provides a substantial yet manageable balance point for field use and rapid follow-up shots, while the Cf blank bolt compatibility ensures a clean, resilient system designed for repeatable performance under demanding conditions. Whether youre building a high-accuracy hunting rifle or a competition-ready platform, this barrel delivers exceptional rigidity, heat tolerance, and sustained accuracy, translating each shot into precise outcomes across varmint through big-game scenarios.