Proof Research Lone Peak Arms Carbon Fiber Prefit Barrel 300 Winchester Magnum 24" Sendero Contour 1:10" Twist 5 Groove

Overview

The Proof Research Lone Peak Arms Carbon Fiber Prefit Barrel is chambered in .300 Winchester Magnum with a 24-inch barrel length, a Sendero contour, and a 1:10-inch twist with 5-groove rifling. Designed for match-grade accuracy and durability, it features a steel core produced from double-stress relieved 416R stainless steel that is drilled, contoured, reamed, cut rifled, lapped, and borescope inspected. The barrel is wrapped in an aerospace-grade carbon fiber using a helical wrapping pattern. This design favors longitudinal thermal diffusivity to efficiently dissipate heat away from the barrel, allowing the system to cool faster and maintain accuracy over extended strings of fire.

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