Proof Research Carbon Fiber Barrel Blank 308 Caliber 26" Sendero Contour 1:8" Twist

Overview

The Proof Research carbon fiber barrel blank chambered in 308 Caliber features a 26-inch length, 1:8-inch twist rate, 2.5-inch breech length, 1.20-inch shank diameter, and a Sendero contour, with an overall weight of 3 pounds 3 ounces. Proof's steel barrels are precision-machined in-house from double-stress relieved 416R stainless steel that is drilled, contoured, reamed, cut rifled, lapped, and borescope-inspected. The aerospace-grade carbon fiber sleeve utilizes a helical wrapping pattern that promotes longitudinal thermal diffusivity to efficiently dissipate heat, allowing the barrel to cool rapidly and maintain match-grade accuracy and durability over extended firing sessions.

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