Proof Research’s 284 Caliber Sendero carbon fiber barrel features a full-profile, match-grade 416R stainless steel barrel blank that is turned down to a significantly reduced profile, then wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin developed by Proof Research’s Advanced Composites Division. This 26-inch barrel features a 1-9 twist rate, a 1.2-inch shank diameter, and a 2.5-inch breech length, weighing just 3.25 lbs.
The aerospace-grade carbon fiber used has a specific strength up to 30 times that of stainless steel and a specific stiffness up to 7 times greater than steel, while moving heat very effectively through the barrel wall, greatly increasing heat transport and resulting in barrels that cool faster. The barrel is up to 64% lighter than traditional steel barrels of similar contour, making it ideal for hunters and precision shooters who demand both accuracy and portability in challenging terrain.
All Proof Research barrels are rifled using single-point cut rifling, lead lapped and thoroughly inspected at multiple quality control stations throughout the manufacturing process. The result is an aerospace-grade, high-fiber content composite barrel that is stronger, lighter, as accurate as the finest precision steel barrel, and durable to perform in the most demanding environments. Your bolt-action barrel will arrive ready for thread and chamber by your gunsmith.
