Proof Research Carbon Fiber Barrel Blank 284 Caliber, 7mm 26" Sendero Contour 1:9" Twist

Overview

The Proof Research Carbon Fiber Barrel Blank in 7mm (.284 caliber) features a 26-inch length, a 1:9" twist rate, a Sendero contour, a 2.5-inch breech length, and a 1.20-inch shank diameter. Engineered for bolt-action rifle builds, the barrel arrives as a blank requiring threading and chambering by a gunsmith. Each barrel utilizes double-stress relieved 416R stainless steel core material that is drilled, contoured, reamed, cut-rifled, lapped, and borescope-inspected. It is wrapped in aerospace-grade carbon fiber using a helical pattern designed to enhance heat dissipation along the barrel length and through the wall, resulting in faster cooling times and consistent match-grade accuracy over extended firing sessions.

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