Proof Research Impact Precision 787R Carbon Fiber Prefit Barrel 300 PRC 24" Sendero Contour 1:9" Twist 5 Groove

Overview

The Proof Research Impact Precision 787R Carbon Fiber prefit barrel is chambered in 300 PRC with a 24-inch length and 1:9-inch twist rate. Designed for match-grade performance, these barrels are produced in-house from double-stress relieved 416R stainless steel, which is drilled, contoured, reamed, cut rifled, and lapped before undergoing borescope inspection. The barrel utilizes aerospace-grade carbon fiber, which offers superior strength and stiffness compared to stainless steel. Proof’s helical wrapping pattern is engineered to optimize longitudinal thermal diffusivity, allowing the barrel to dissipate heat more efficiently along its length. This thermal management improves heat transport through the barrel wall, resulting in faster cooling and maintained accuracy during extended shooting sessions.

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