PROOF Research .264 Caliber Carbon Fiber Barrel Blank, 20" Length, 1:7.5 Twist, Light Sendero Contour

A PROOF Research .264 caliber carbon fiber barrel blank gives you a premium foundation for a custom rifle build that balances weight savings with rigidity. The 20-inch length and 1:7.5 twist rate are optimized for .264 cartridges, making this blank suitable for hunters and shooters who want to assemble a precision rifle without settling for off-the-shelf performance. Whether you're working with a gunsmith or building your own upper, a quality barrel blank is where accuracy starts.

PROOF's carbon fiber construction delivers a significant weight advantage over traditional steel—at just 2 lbs 10 oz, this blank keeps your rifle lighter without compromising stiffness where it counts. The Light Sendero contour strikes a practical balance: enough material at the breech for solid headspace and chamber work, tapering to a thinner profile forward for a more maneuverable rifle. The 2.5-inch breech diameter and 1.20-inch shank diameter are standard specs that work with conventional action threading and bearing surfaces.

This is a blank, not a finished barrel—you'll need to chamber it, cut the muzzle, and install it on an action. That means working with a gunsmith or having the right tools and knowledge in-house. If you're familiar with barrel installation and want the flexibility to specify your own muzzle profile, chamber reamer, and finish, a quality blank from PROOF gives you that control. It's the choice of builders who know exactly what they want and aren't interested in generic production barrels.

Key Features

• Carbon fiber construction for reduced weight and maintained rigidity
• 1:7.5 twist rate optimized for .264 caliber performance
• Light Sendero contour balances stiffness with handling weight
• 20-inch length suitable for medium-range and hunting applications
• 2.5-inch breech diameter for solid headspace and chamber work
• 1.20-inch shank diameter compatible with standard action threading

Specifications

Frequently Asked Questions

What do I need to do to install this barrel blank?

This is an unfinished blank—it requires chambering, muzzle profiling, and installation on an action by a gunsmith or experienced builder. It is not ready to shoot as-is.

What .264 cartridges work with a 1:7.5 twist?

The 1:7.5 twist is designed for .264 cartridges. For specific load and bullet weight compatibility, consult ballistic references or your gunsmith.

How does the Light Sendero contour compare to other barrel profiles?

The Light Sendero is a moderate taper that maintains stiffness at the breech while reducing overall weight forward. It's a practical choice for rifles that need to balance accuracy with handling weight.

Will this barrel blank fit my action?

The 2.5-inch breech and 1.20-inch shank diameter are standard. Confirm with your gunsmith or action manufacturer that your specific action accommodates these dimensions.