The Proof Research Bolt Action Carbon Fiber Blank Barrel, .257 Caliber Sendero Profile, 24" Barrel, Graphite/Silver Finish is built as a premium foundation for custom rifle projects. This carbon fiber wrapped blank combines a 24 inch Sendero contour with a lightweight 3 pound profile, delivering excellent rigidity and heat management while keeping overall rifle weight in check. With its .257 caliber bore and 1:7.5 twist rate, it is engineered to support precise, repeatable accuracy once properly chambered and finished by a qualified gunsmith.

Designed as an unfinished blank, this barrel ships without threading or a muzzle device so builders can tailor the breech, crown, and final fit to their specific action and cartridge choice. The 2.5 inch breech and 1.20 inch shank diameter provide a predictable starting point for long range hunting or precision target rifles where balance and consistency matter. Ideal for shooters who want a modern, carbon fiber wrapped barrel that stays stable over extended strings of fire, it reflects Proof Research’s focus on innovation and performance-driven barrel technology.

• Manufacturer: Proof Research
• Model: BBL CF Blank Bolt .257 Sendero 24 1-7.5
• Caliber: .257
• Barrel Length: 24 Inches
• Twist Rate: 1:7.5
• Breech Length: 2.5 Inches
• Shank Diameter: 1.20 Inches