Proof Research 260 Rem 18″ Carbon Fiber Pre-Fit Barrel for Sig Cross

The Proof Research 138946 bolt action pre-fit barrel is designed for the Sig Cross platform and chambered in 260 Rem. This 18″ carbon fiber finished barrel features a 1:8″ rate of twist and a 5-groove bore, and is supplied with 5/8″-24 tpi threading. The drop-in design is intended to allow headspacing and installation without a gunsmith in many cases, providing a straightforward retrofit option for rifles built on the Sig Cross action.

Key Specifications

• Chambering is 260 Rem for shooters using that cartridge.
• Barrel length is 18 inches for a compact, balanced package.
• Rate of twist is 1:8 to stabilize a wide range of bullet weights.
• Bore configuration is a 5-groove design.
• Thread pitch is 5/8″-24 tpi for standard muzzle device compatibility.
• Finish and outer construction use Carbon Fiber for reduced weight and rigidity.
• Barrel type is Pre-Fit to fit the intended action without full barreling work.
• Feature: Drop-In design to simplify installation on the Sig Cross platform.
• Model designation is Bolt Action Barrel by Proof Research.

Engineered to combine the stiffness and light weight of a carbon-fiber profile with a user-friendly pre-fit form factor, this Proof Research barrel is suitable for shooters building a lightweight hunting rifle or a compact precision rig on the Sig Cross action. Its drop-in fit and threaded muzzle make it a practical choice for those seeking an upgraded barrel without extensive gunsmithing work.