The Proof Research 123355 Stainless Bolt-Action Barrel, 6.5 Creedmoor, 26" Competition Contour, 5/8-24 Threaded, Stainless is a purpose-built pre-fit barrel for Impact Precision 737R short actions. Machined from stainless steel with a true competition contour, it delivers a rigid, heat-resistant profile that maintains accuracy over extended strings of fire. The 26-inch length and 1:8 twist rate are tuned for modern 6.5 Creedmoor match bullets, while the 5/8-24 threaded muzzle makes it ready for brakes or suppressors.

This drop-in barrel is ideal for precision rifle competition, long-range practice, and serious training where consistency and repeatability matter. Its heavier contour and finished weight around 7 lbs 5 oz help stabilize the rifle and keep point of impact steady as the barrel warms. Whether you are building a new match rifle or upgrading an existing 737R, this Proof Research barrel offers a refined foundation backed by the company’s reputation for tight tolerances and dependable performance.

• Manufacturer: Proof Research
• Model: 123355 Stainless Bolt-Action Barrel
• Caliber: 6.5 Creedmoor
• Action: 737R Short Action
• Barrel Length: 26 inches
• Twist Rate: 1:8
• Muzzle Thread: 5/8-24