Proof Research 243 Cal Bolt Action Barrel Blank, 28" Competition Contour, 1:7.50" Twist, 4 Grooves, Stainless Steel
Proof Research
The Proof Research 113721 bolt action barrel blank gives precision shooters and custom rifle builders a quality starting point for a 264 caliber competition or long-range rifle. This 28-inch stainless steel barrel blank arrives as a professional-grade component ready for your gunsmith to chamber, crown, and finish to your exact specifications. Whether you're assembling a competition rifle, a long-range hunting build, or a precision target rifle, Proof Research's reputation for consistency and accuracy makes this blank a trusted choice for builders who demand tight tolerances and reliable performance.
The competition contour profile balances weight and rigidity—designed to manage heat and vibration during sustained fire on the range or in competition. The 1:7.50-inch twist rate is engineered for the 264 caliber, giving you the stability needed for precision shooting. With four grooves and full stainless construction, this blank resists corrosion and handles the demands of high-round-count shooting and variable conditions. It's an unfinished component, which means you control the final chambering, headspace, and fit to your action—essential for builders seeking absolute precision.
This is a genuine Proof Research product, backed by the brand's standing in precision manufacturing. If you're dreaming up a custom 264 build and want a barrel blank from a maker known for exacting standards, this is solid material to work with. Consult with your gunsmith on fit, finish, and headspace before purchase to ensure compatibility with your action and intended use.
| Caliber | 264 |
| Barrel Length | 28" |
| Contour | Competition |
| Twist Rate | 1:7.50" |
| Grooves | 4 |
| Material | Stainless Steel |
| Type | Bolt Action Barrel Blank |
| Manufacturer | Proof Research |
This is an unfinished blank and will require professional gunsmithing to chamber, headspace, and fit to your specific action. Consult with your gunsmith to verify compatibility with your bolt face, action type, and intended use before ordering.
A barrel blank is an unfinished barrel component that a qualified gunsmith chambers, crowns, and fits to your action. Custom builders use blanks to achieve precise specifications, optimize for a particular action, or create a caliber or configuration not available as a factory barrel. You're building exactly what you need.
The 1:7.50-inch twist is engineered to stabilize bullets common to the 264 caliber across a range of weights and velocities. Your gunsmith and load data will confirm the optimal twist for your intended cartridge and bullet selection.
No. This is an unfinished blank. It requires chambering, crowning, finishing, and fitting by a professional gunsmith before installation and use. Do not attempt to use a blank without proper gunsmithing.