Proof Research Carbon Fiber PXT Barrel Blank Features The Proof Research Carbon Fiber PXT Barrel Blank is engineered around PXT rifling technology a complete rethinking of conventional rifling geometry and twist progression. By dramatically reducing the rifling lead angle and smoothing how the projectile engages the bore PXT technology lowers wear on the barrel and reduces felt torque during firing which helps shooters stay on target more effectively between shots. This 22 inch blank is cut in the Sendero contour with a 1:8 twist rate a versatile combination suited to a range of .224 caliber bullet weights for both hunting and long range applications. The blank measures a 2.5 inch breech and a 1.2 inch shank diameter dimensions gunsmiths will need to account for during the chambering and fitting process. Built around Proof s proven carbon fiber construction this blank delivers an exceptional stiffness to weight ratio letting builders reduce overall rifle weight without sacrificing the rigidity needed for consistent accuracy. At 3 pounds 2 ounces the finished blank remains dramatically lighter than a comparable steel barrel of the same contour and length a meaningful advantage for hunters who carry their rifle long distances. Independent testing has shown PXT barrels can achieve a 30 to 100 percent increase in barrel life over conventional rifling while holding to the accuracy standards Proof Research barrels are known for. For custom rifle builders and gunsmiths working on lightweight hunting rifles or precision long range systems this PXT barrel blank offers a premium foundation for a serious .224 caliber build. Proof Research Carbon Fiber PXT Barrel Blank Specifications Manufacturer: Proof Research Model: Carbon Fiber PXT Barrel Blank Caliber: .22 Cal / .224 Barrel Length: 22 Twist Rate: 1:8 Contour: Sendero Breech: 2.5 Shank Diameter: 1.2 Finish: Carbon Fiber Weight: 3 lbs 2 oz Available At: GrabAGun