The Proof Research 100905 is a bolt-action barrel blank in .264 caliber, 22 inches long, with a 1:8 twist rate and Sendero contour. Proof Research’s patented manufacturing process begins with full-profile, match-grade 416R stainless steel barrel blanks, which are turned down to a significantly reduced profile greatly reducing weight, then wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin. This construction delivers exceptional performance characteristics across multiple dimensions.
Up to 64% lighter than traditional steel barrels of similar contour, this barrel blank combines weight savings with structural integrity. The Sendero contour has become a main staple of Proof Research’s contour line, offering a bit more weight and stiffness—the company’s go-to recommendation for customers seeking top precision and a balanced weight/stiffness tradeoff. Carbon fiber moves heat very effectively through the wall of the barrel, greatly increasing heat transport resulting in barrels that cool faster, maintain accuracy over longer sessions of fire, and live longer.
Your bolt-action barrel will arrive ready for thread and chamber by your gunsmith. As a barrel blank—a fully turned and finished barrel blank that is not chambered or threaded—it provides a true blank canvas with the ability to use non-standard chamberings, fit various actions not supported by pre-fit barrels, and accommodate specific shank/fit requirements or unique twist/length combinations. The .264 caliber is suitable for cartridges 6.5×284, .260 Rem, .264 Win Mag, 6.5×47 Lapua, 6.5 Creedmoor, 6.5 PRC, and others.
