The Proof Research Carbon Fiber Sendero Barrel Blank (brand part number 100950) is a 26-inch .284 Winchester barrel blank finished in black, wrapped in aerospace-grade carbon fiber over a 416R stainless steel core. Machined by Proof Research with a 1:8.4 twist rate in the standard Sendero contour, this extended-length blank runs up to 64% lighter than a traditional steel barrel while offering improved heat dissipation and reduced harmonic vibration. As a blank, it is sold unchambered for a gunsmith to fit and finish to a specific action.

Key Specifications

• Chambered for .284 Winchester cartridges at the customer’s chosen specification.
• Barrel length is 26 inches, the extended option in this Sendero lineup.
• Twist rate is 1:8.4.
• Constructed from 416R stainless steel wrapped in carbon fiber.
• Finished in black.
• Contour is Sendero, up to 64% lighter than a comparable steel barrel.
• Sold as a barrel blank for gunsmith chambering and fitting.
• Improves heat dissipation for cooler, longer-lasting strings of fire.
• Resists point-of-impact shift during high-volume strings of fire.

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.

Why choose the 26-inch length? The extended length helps .284 Winchester loads reach additional velocity for long-range shooting.

Buy the Proof Research .284 Winchester 26-inch Sendero Blank

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