The Proof Research .224 Caliber 20-inch Carbon Fiber Sendero Barrel features a 1-7 twist rate and weighs 2.14 lbs. This bolt-action barrel blank arrives ready for your gunsmith to thread and chamber, making it ideal for building custom rifles chambered in .223 Rem, .22-250 Rem, .220 Swift, and similar cartridges. Proof Research begins with full-profile, match-grade 416R stainless steel barrel blanks that are turned down to a significantly reduced profile, then wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin.
The aerospace-grade carbon fibers diffuse heat along the length of the barrel through their unique thermal properties, allowing the barrel to cool faster, maintain accuracy over longer shooting sessions, and extend barrel life. This construction delivers up to 64% weight savings compared to traditional steel barrels of similar contour, making it an excellent choice for hunters who demand a rigid, lightweight barrel for extended pack-in situations. The result is an aerospace-grade, high-fiber content composite barrel that is stronger, lighter, and as accurate as the finest precision steel barrels.
