The Proof Research Carbon Fiber Barrel Blank, .257 Cal, 26" Sendero Contour is built for shooters who want a lightweight barrel that still delivers match-grade consistency. This carbon fiber–wrapped blank uses a Sendero contour and a 26-inch length to balance stiffness and weight, giving custom rifle builders a solid foundation for precision performance.
Designed for bolt-action builds, this .257 caliber barrel features a 1:7.5 twist rate to stabilize a wide range of projectiles, along with a 2.5-inch breech and 1.20-inch shank diameter for secure receiver fitment. Its 3 lbs 4 oz weight helps maintain steady shooting positions without feeling cumbersome, making it well suited for long-range hunting and dedicated range work. Backed by Proof Research’s focus on advanced materials and accuracy-driven design, this barrel blank is an excellent starting point for a refined custom rifle.
- Manufacturer: Proof Research
- Model: BBL CF Blank Bolt .257 Sendero 26 1-7.5
- Caliber: 257
- Barrel Length: 26 Inches
- Twist Rate: 7.5
- Barrel Breech: 2.5 Inches
- Shank Diameter: 1.20 Inches
| __Twist Rate | 1:7.5 |
| __Material | Carbon Fiber, Stainless Steel |
| __Rifling | Other |
| __Caliber | .257 Cal |
| __Model | BBL CF Blank Bolt .257 Sendero 26 1-7.5 |
| __Capacity | NA |
| __Optic Footprint | NA |
| __Action | NA |
| __Barrel Length | 26.00" |
