The Proof Research 105337 Bolt Action Barrel Blank 264 Cal 24" Sendero Light Contour 1:7.50" Twist 4 Grooves, Carbon Fiber Wrapped delivers high-precision performance for demanding rifle builds with its Sendero Light contour and four-groove rifling designed to optimize stability and velocity. This 24-inch, carbon fiber wrapped barrel blank pairs the bolt-action platform with a lightweight yet rigid construction, helping to reduce fatigue on long-range hunts and tactical sessions while maintaining consistent point of impact across rapid strings. The 1:7.50 twist is tailored for accurate stabilization of 264 caliber projectiles, supporting versatile load development from lighter hunting rounds to heavier match-grade offerings. Proof Research leverages its renowned engineering to deliver a barrel blank that promotes heat dispersion and structural integrity without compromising stiffness, enabling shooters to sustain precision over extended firing sequences. Whether upgrading an existing rifle or assembling a dedicated long-range setup, this carbon fiber wrapped blank provides a clean foundation for a dependable, high-performance bolt-action rifle.