Product Description The Proof Research 136683 is a premium bolt-action rifle barrel chambered in .284 Caliber, featuring a 20-inch length and a 1-in-8 rate of twist. Built to Proof Research&';s exacting standards, this barrel showcases the brand&';s signature carbon fiber wrapped construction over a steel core, delivering a dramatic reduction in weight without sacrificing stiffness or accuracy. The exposed stainless steel muzzle and chamber sections provide strength at the critical contact points, while the carbon fiber sleeve keeps overall weight low for long-range hunting and precision shooting applications. Whether you are building a custom rifle or upgrading an existing platform, this barrel offers exceptional performance and durability in a lightweight package. Product Highlights Precision .284 Caliber: Optimized for the .284 caliber family, delivering excellent long-range ballistics and terminal performance. Carbon Fiber Wrapped Construction: Signature carbon fiber over steel design significantly reduces barrel weight while maintaining rigidity and accuracy. 20-Inch Barrel Length: Balances velocity retention with maneuverability, ideal for hunting and field use. 1-in-8 Rate of Twist: Stabilizes a wide range of .284 caliber projectiles for consistent, accurate downrange performance. Bolt Action Profile: Engineered specifically for bolt-action rifle platforms, ensuring a precise fit and optimal functionality. Specs Brand: Proof Research Manufacturer Part Number (MPN): 136683 UPC: 843068136683 Caliber/Gauge: .284 Caliber Barrel Length: 20" Rate of Twist: 1-in-8 Action Type: Bolt Action Product Type: Accessory - Barrels Shipping Weight: 3.7 lbs Package Height: 3.0" Package Width: 3.5" Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>