Proof Research Pre-Fit Bolt Action Barrel 6mm Creedmoor 20" 1:7.5 Twist 5/8x24 Stainless - Sig Cross Drop-In

The Proof Research Pre-Fit Bolt Action Barrel is a precision 20" stainless steel replacement barrel engineered as a direct drop-in upgrade for the Sig Cross bolt-action rifle. Cut from stainless steel with a 5-groove bore and a fast 1:7.5 twist rate, this pre-fit barrel is purpose-built for 6mm Creedmoor precision and long-range applications.

As a pre-fit barrel, it is machined to factory-spec dimensions so it seats into the Sig Cross action without the gunsmith fitting required for traditional barrel installations - a true drop-in design for builders who want a straightforward swap. The 5/8x24 threaded muzzle accepts a wide range of muzzle brakes, suppressors, and thread-on accessories, giving shooters flexibility to configure the rifle for suppressor use or recoil reduction.

Chambered in 6mm Creedmoor, this barrel delivers the flat trajectory, manageable recoil, and excellent down-range energy that have made the cartridge a favorite for long-range precision shooting and medium-game hunting. The 1:7.5 twist is well matched to the heavy high-ballistic-coefficient projectiles typically loaded for the 6mm Creedmoor, supporting consistent accuracy at extended distances. The stainless finish offers corrosion resistance for use in varied field conditions.