PROOF Research .338 Bolt Action Barrel, Sendero Contour, 24" 1-9.4 Twist

The PROOF Research .338 bolt action barrel in Sendero contour gives you a precision rifle build foundation engineered for serious long-range shooting. At 24 inches with a 1-9.4 twist rate, this barrel is built to stabilize .338 caliber projectiles across the velocity and weight ranges that matter for hunting and precision rifle competition. PROOF barrels are known in the custom rifle community for consistent accuracy and reliable performance—whether you're building a new rifle or upgrading an existing platform.

The Sendero contour strikes a balance between lightweight handling and thermal stability during extended shooting sessions. At 3 pounds 6 ounces, it's manageable enough for field work while maintaining the mass needed for sustained accuracy. The 1.25-inch shank diameter provides a standard platform for most modern bolt action actions, making this barrel compatible with a wide range of receiver options and allowing builders to work with existing gunsmithing setups.

This is a builder's barrel—you'll need action, stock, and trigger components to complete your rifle. If you're already set up with reloading equipment and familiar with .338 caliber ballistics, or you're working with a gunsmith on a custom build, PROOF's reputation for quality machining and shot-to-shot consistency gives you confidence in the foundation. The 1-9.4 twist is optimized for the .338 family, so verify your intended load and bullet weight align with that twist rate before ordering.

Key Features

• .338 caliber, 24-inch length—balanced for precision rifle work and field carry
• 1-9.4 twist rate engineered for .338 projectile stability
• Sendero contour reduces weight while maintaining accuracy potential
• 1.25-inch shank diameter fits standard modern bolt actions
• PROOF Research manufacturing reputation for consistency and durability

Specifications

Frequently Asked Questions

What actions and stocks will this barrel fit?

The 1.25-inch shank diameter is standard across most modern bolt action receivers. Work with your gunsmith or action manufacturer to confirm thread pitch and headspace requirements, which this product specification does not cover.

Is this barrel ready to install on my rifle?

This is a barrel blank for custom rifle builders and gunsmiths. You'll need to have it threaded, headspaced, and fitted to your specific action by a qualified gunsmith. It does not come as a plug-and-play component.

What bullets and loads does the 1-9.4 twist stabilize?

The 1-9.4 twist is designed for .338 caliber, but the specific bullets and velocities it stabilizes depend on bullet weight and design. Consult reloading manuals and ballistic references for your intended .338 load before ordering.

Is this barrel suitable for hunting?

Yes. The 24-inch length and Sendero contour make it practical for field hunting while maintaining the accuracy capability expected from a precision rifle barrel. Your choice of action, stock, and trigger will determine the final rifle's suitability for your hunting application.