The Proof Research 107959 Carbon Fiber .308 Sendero Bolt Barrel Blank, 26" is built for shooters who demand a lightweight barrel that still delivers match-grade consistency. This bolt-action barrel blank uses a reduced-profile 416R stainless steel core wrapped in aerospace-grade carbon fiber to enhance rigidity, manage heat, and maintain a stable harmonic signature shot after shot. With a 26-inch Sendero contour, 1:9 twist rate, and 5-groove rifling, it provides a solid foundation for precision .308 rifle builds focused on accuracy and repeatable performance.

This .308 barrel blank is well suited for custom long-range hunting rifles, precision target rigs, and training builds where balance and durability matter. The 2.5-inch breech length and 1.20-inch shank diameter support proper receiver fitment, while the carbon fiber wrap helps the barrel cool faster and hold its point of impact during extended strings at the range or in the field. It is an excellent choice for shooters building a high-performance bolt gun that benefits from modern materials and proven contour geometry, backed by Proof Research’s reputation for meticulous craftsmanship and innovation in barrel technology.

• Manufacturer: Proof Research
• Model: 107959 Carbon Fiber .308 Sendero Bolt Barrel Blank, 26"
• Caliber: .308
• Barrel Length: 26"
• Twist Rate: 1:9
• Contour: Sendero
• Breech Length: 2.5"