BSF Barrels Zermatt Origin Carbon Fiber Prefit Barrel 7mm Backcountry 20" 1:8" Twist

Overview

The BSF Barrels Zermatt Origin Carbon Fiber Prefit Barrel is chambered in 7mm Backcountry with a 20-inch length, a 1:8" twist rate, and a carbon fiber finish. It features an 11-degree target crown, 6-groove button rifling, and a double-stress relieved 416R stainless steel match core. The barrel utilizes a tensioned jacketing method where the stainless core is placed inside a roll-wrapped carbon fiber sleeve with machined openings, leaving 95% of the carbon fiber unbonded to the steel. This design creates air gaps for rapid heat venting while matching the thermal expansion rate of 416R stainless steel. The carbon fiber sleeve provides a vibration-damping effect to maintain rifling straightness and structural stiffness under heat while keeping the overall assembly lightweight.

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