Proof Research Pre-Fit Bolt Action Barrel 6.5 Creedmoor 16" 1:8 Twist Carbon Fiber - Sig Cross

The Proof Research Pre-Fit Bolt Action Barrel is a precision-engineered replacement barrel built to drop directly into the Sig Cross bolt-action rifle platform. Machined to factory-spec dimensions for a true drop-in fit, this pre-fit design eliminates the need for custom headspacing or gunsmith work, making it a straightforward upgrade or replacement option for Sig Cross owners.

Chambered in 6.5 Creedmoor, the barrel measures 16" in length and features a 1:8" twist rate with a 5-groove bore optimized to stabilize the full range of 6.5 Creedmoor bullet weights, from lighter match projectiles through heavier hunting and long-range designs. The muzzle is cut with 5/8"-24 tpi threads, ready to accept a standard muzzle brake or suppressor.

Proof Research's signature carbon fiber construction reduces weight compared to an all-steel barrel of the same profile while maintaining the stiffness required for precision shooting. The result is a lighter, faster-handling rifle that retains excellent accuracy potential, ideal for hunters and precision shooters looking to optimize their Sig Cross build.