The Proof Research 113707 Stainless Steel Bolt-Action Barrel Blank, .243 Caliber, 28" Competition Contour is built for shooters who demand consistent precision from a premium match-grade tube. This unchambered blank starts with double stress-relieved 416R stainless steel that is drilled, contoured, reamed, cut-rifled, and hand-lapped to deliver uniform bore dimensions and excellent long-range accuracy potential.

With its 28" length, fast 1:7.5 twist rate, and 4-groove rifling, this .243 caliber barrel blank is ideal for modern high-BC projectiles once properly chambered by a qualified gunsmith. The generous breech length and substantial shank diameter provide rigidity for competition and precision target rifles, making it a strong foundation for custom bolt-action builds focused on tight groups and repeatable performance. Proof Research’s meticulous manufacturing and attention to detail are evident in every stage of this barrel’s construction.

• Manufacturer: Proof Research
• Model: 113707
• Caliber: .243
• Barrel Length: 28"
• Rate Of Twist: 1:7.5
• Rifling: 4-Groove
• Barrel Profile: Competition Contour