Description
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.
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