The Proof Research 110171 Bolt Action Barrel Blank in 264 Cal with a 24" Sendero Contour, 1:7.50" twist and 4 grooves, carbon fiber wrapped, offers a premium balance of strength, stiffness, and lightweight performance for precision rifle builds. This carbon fiber wrapped barrel combines modern materials with a proven Sendero contour to deliver consistent harmonics, improved heat dissipation, and enhanced accuracy during long-range shooting sessions. The 24" length provides an optimal balance between muzzle velocity and swing-weight, while the 1:7.50" twist stabilizes heavier 6.5mm projectiles for reliable stabilization across a range of loads. Designed as a bolt action barrel blank, it enables custom builders and gunsmiths to tailor fitment to their specific action and chambering needs, ensuring a precise, flush fit and clean bed-in for repeatable groups. With four lands and grooves, the rifled bore supports clean powder burn and steady rifling life, contributing to durable performance under demanding field conditions. This barrel is ideal for precision rifles, tactical platforms, and long-range hunting applications where true consistency and a lightweight profile matter.