Proof Research 101018 Bolt Action Blank 308 Win 26 in Black Carbon Fiber Finish 416R Stainless Steel Material Blank with Sendero Contour for s, Rifle Barrel

Overview

The Proof Research bolt-action rifle barrel blank is chambered in .308 Winchester with a 26-inch length and a 1:10 twist rate. Built with a 416R stainless steel core and wrapped in aerospace-grade carbon fiber using a proprietary matrix resin developed by Proof Research ACD, this barrel delivers match-grade accuracy while weighing up to 64% traditional steel barrels of a similar Sendero contour. The carbon fiber construction provides exceptional specific strength and stiffness compared to steel. Designed for thermal performance, the helical wrapping pattern promotes efficient longitudinal thermal diffusivity, allowing the barrel to effectively dissipate heat through its walls. This prevents point-of-impact shifts during high-volume firing, reduces harmonic barrel vibration, and ensures improved heat dissipation for cooler, longer-lasting performance. The barrel features a 1.20-inch shank diameter, a 2.5-inch breech length, and a black carbon fiber finish, and requires final threading and chambering by a professional gunsmith.

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