The Proof Research Carbon Fiber Sendero Barrel Blank (brand part number 130513) is a 24-inch, .277-caliber barrel blank in the standard Sendero contour, sold unchambered for a gunsmith to fit, chamber, and crown to a customer’s specific action. Wrapped in aerospace-grade carbon fiber over a steel core by Proof Research, this blank carries a 1:8.4 twist rate and a 2.5-inch breech length over a 1.20-inch shank diameter, weighing approximately 3 pounds, 1 ounce before final chambering.

Key Specifications

• Chambered for .277-caliber cartridges at the customer’s chosen specification.
• Barrel length is 24 inches.
• Twist rate is 1:8.4.
• Breech length is 2.5 inches over a 1.20-inch shank diameter.
• Contour is Sendero, wrapped in carbon fiber over a steel core.
• Sold as a barrel blank for gunsmith chambering and fitting.
• Weighs approximately 3 pounds, 1 ounce unchambered.

Frequently Asked Questions

Is this barrel ready to install out of the box? No, this is an unchambered blank; a gunsmith must chamber, thread, and fit it to your specific action.

Does the carbon fiber wrap affect accuracy? No, Proof Research engineers the wrap to maintain match-grade accuracy while cutting weight and improving heat dissipation versus a solid steel barrel.

Buy the Proof Research .277 Caliber Sendero Blank

Give your gunsmith a premium carbon-fiber blank for your next custom build. Order this rifle barrel from our Lubbock, Texas gun shop for fast, insured shipping to your door.