The Proof Research .308 Winchester Stainless Barrel (Proof Research part no. 107584) gives precision rifle owners a factory-spec replacement barrel machined to the exacting standards Proof Research built its name on. Cut in a 27-inch M24 contour from stainless steel, it carries the breech length and shank diameter dimensions a gunsmith needs to fit and headspace it to a compatible bolt-action receiver. The 1-in-10 twist rate stabilizes a wide range of .308 Winchester bullet weights, from lighter varmint loads up through heavier long-range match bullets. This stainless option brings Proof Research’s match-grade rifling and tight bore tolerances to shooters who want a traditional steel profile rather than the brand’s carbon-fiber-wrapped line, making it a strong fit for precision rifle competitors, long-range hunters, and anyone rebarreling a .308 bolt gun for better accuracy.

Key Specifications

• Chambered in .308 Winchester, one of the most versatile and widely available precision rifle cartridges.
• Machined with a 1-in-10 twist rate that stabilizes bullet weights from roughly 150 to 190 grains.
• Finished at 27 inches long, balancing added velocity and barrel time against overall rifle weight.
• Built in the M24 military-pattern contour for a heavier, more rigid profile during long strings of fire.
• Supplied with a 2.500-inch breech length for a gunsmith to fit and headspace to your action.
• Turned to a 1.200-inch shank diameter for accurate fitting to compatible bolt-action receivers.
• Weighs in at 6 pounds, 8 ounces, a substantial profile suited to bench and prone precision shooting.

Frequently Asked Questions

What twist rate does this barrel use? It’s cut with a 1-in-10 twist, which stabilizes a broad range of .308 Winchester bullet weights for both target and hunting loads.

Is this barrel ready to drop straight onto my rifle? It’s supplied to precise breech length and shank diameter dimensions for a gunsmith to fit, chamber, and headspace to your specific action.

What makes the M24 contour different from a sporter barrel? The M24 profile is heavier and stiffer than a typical hunting contour, which helps it resist heat-induced stringing during extended range sessions.

Buy the Proof Research .308 Win Stainless Bolt-Action Barrel

Order this Proof Research stainless .308 barrel from our rifle parts lineup and let your gunsmith turn a factory action into a genuine precision shooter. Ships fast from our Lubbock, Texas gun shop with the same insured handling we use on every barrel we sell.