This Proof Research barrel is bore sized for .284 caliber with a 20-inch length and a 1-in-8 twist rate, sold as a standalone build or replacement barrel from Proof Research (brand part no. 136683). Proof Research’s reputation for tight tolerances and consistent accuracy carries into this configuration, giving builders a proven option for a custom .284 rifle project. It’s built for gunsmiths and experienced builders assembling or rebarreling a precision rifle around a proven name.

Key Specifications

• Bore sized for .284 caliber.
• Barreled at 20 inches.
• Rifled with a 1-in-8 twist rate.
• Sold as a standalone replacement/build barrel, not a complete action.

Frequently Asked Questions

What twist rate does this barrel use? 1-in-8.

What caliber is this barrel bored for? .284 caliber.

Buy the Proof Research Barrel

Build or rebarrel a precision .284 rifle around this 20-inch Proof Research barrel. Order it from our Lubbock, Texas gun shop, and browse our rifle barrels selection for more rifle barrels.