The PROOF Research BBL CF Blank Bolt .308 Sendero 16.5" 1-8 Twist Barrel is a precision rifle barrel built for shooters who demand accuracy in a compact, lightweight package. Whether you're building a short-range tack driver, a backcountry hunting rifle, or a reconfigurable bolt-action platform, this carbon-fiber blank barrel gives you the foundation to create exactly what you need. The 1-8 twist rate stabilizes a wide range of .308 Winchester loads, making it a versatile choice for both target and field work.

Carbon-fiber construction keeps weight down without sacrificing rigidity—critical when you're assembling a rifle that needs to perform in the field without becoming a burden. At 2 pounds 6 ounces, this barrel contributes meaningfully less mass than traditional steel, freeing up weight budget for other components. The Sendero contour provides a classic field profile that balances stiffness and portability, while the 16.5-inch length makes it ideal for situations where compactness matters—thick timber, vehicle operations, or any hunting where maneuverability beats length.

Because this is a blank bolt (also called a bolt-faced blank or headspace blank), you'll be responsible for final chambering, threading, or profiling work to your specific build specs and headspace requirements. This is purpose-built for gunsmiths, experienced builders, or those working with a trusted gunsmith. The 2.5-inch breech diameter and 1.20-inch shank diameter are your references for that work.

The PROOF Research BBL CF Blank Bolt .308 Sendero 16.5" 1-8 Twist Barrel is a precision rifle barrel built for shooters who demand accuracy in a compact, lightweight package. Whether you're building a short-range tack driver, a backcountry hunting rifle, or a reconfigurable bolt-action platform, this carbon-fiber blank barrel gives you the foundation to create exactly what you need. The 1-8 twist rate stabilizes a wide range of .308 Winchester loads, making it a versatile choice for both target and field work.

Carbon-fiber construction keeps weight down without sacrificing rigidity—critical when you're assembling a rifle that needs to perform in the field without becoming a burden. At 2 pounds 6 ounces, this barrel contributes meaningfully less mass than traditional steel, freeing up weight budget for other components. The Sendero contour provides a classic field profile that balances stiffness and portability, while the 16.5-inch length makes it ideal for situations where compactness matters—thick timber, vehicle operations, or any hunting where maneuverability beats length.

Because this is a blank bolt (also called a bolt-faced blank or headspace blank), you'll be responsible for final chambering, threading, or profiling work to your specific build specs and headspace requirements. This is purpose-built for gunsmiths, experienced builders, or those working with a trusted gunsmith. The 2.5-inch breech diameter and 1.20-inch shank diameter are your references for that work.