The Proof Research CF Bolt .204 22 Sendero 1-10 delivers precision and reliability in a compact, purpose-built barrel for varmint hunting and precision rifle applications, blending advanced materials with a trusted Sendero contour to maximize shooters accuracy and consistency. This 204 caliber barrel features a 22-inch length and a 10 twist rate that stabilizes lightweight projectiles while maintaining excellent ballistic performance, paired with a 2.5 inch breech, a 1.20 inch shank diameter, and a rugged weight of 3lbs-2oz for a balanced feel in the field or on the bench. Designed by Proof Research to optimize rigidity, harmonics, and heat dissipation, this barrel enhances shot-to-shot consistency and velocity retention, enabling clean, repeatable groups for longer range engagement. The combination of the Sendero contour and precise chambering supports dependable bore alignment and reduced whip under fire, making it an ideal upgrade for builders seeking a high-performance platform. Whether refining a dedicated varmint rifle or building a versatile precision rig, this Proof Research barrel integrates seamlessly with compatible actions to deliver dependable performance and consistent results shot after shot.