The Proof Research 107881 Carbon Fiber Bolt-Action Barrel Blank, .308, 24.00" Sendero Contour is built for shooters who want a lightweight, match-grade foundation for a custom rifle. Starting with a full-profile 416R stainless steel blank that is turned down and wrapped in aerospace-grade carbon fiber, this barrel blank delivers steel-like rigidity with dramatic weight savings and excellent heat management. The 24-inch Sendero contour and 1:8 twist rate are optimized for modern .30-caliber projectiles, ready for your gunsmith to thread and chamber to your preferred .308-based cartridge.

This barrel blank is ideal for precision rifle builds, long-range hunting setups, or dedicated range rifles where consistent accuracy and reduced barrel whip matter. Its 2.5-inch breech and 1.20-inch shank diameter accommodate a wide variety of bolt actions, while the carbon fiber construction helps the barrel cool faster and maintain point of impact over extended strings of fire. It’s a smart choice for shooters who want custom performance without unnecessary weight, backed by Proof Research’s focus on accuracy and advanced composite engineering.

• Manufacturer: Proof Research
• Model: 107881 Carbon Fiber Bolt-Action Barrel Blank, .308, 24.00" Sendero Contour
• Caliber: .308
• Barrel Length: 24"
• Twist Rate: 1:8
• Barrel Breech: 2.5"
• Shank Diameter: 1.20"