The Proof Research 106556 Bolt Action Barrel Blank in 284 caliber delivers precision and consistency for critical long-range shooting applications, featuring a 26" Sendero Contour blank with a 1:8" twist and 5 grooves, all carbon fiber wrapped for enhanced stiffness and reduced weight. Designed to pair with bolt-action receivers, this rifled bore blank embodies Proof Researchs renowned integration of advanced materials and engineering, offering a stable platform for handloading and precision testing. The carbon fiber finish not only provides a sleek, durable exterior but also contributes to improved heat management and barrel rigidity, supporting tighter groupings and prolonged barrel life under demanding field conditions. With the Sendero Contour, shooters benefit from a proven balance between profile, harmonic control, and effective bore alignment, making it an ideal choice for precision seekers who demand consistent performance across varied elevation and wind scenarios. This barrel blank supports customization for aftermarket builds, and its exacting tolerances ensure smooth chambering and reliable cycling when paired with compatible actions. Elevate long-range capability with the Proof Research bolt action barrel blank, engineered to deliver repeatable accuracy and durability.