The Proof Research .257 Carbon Fiber Barrel Blank in Sendero contour (Proof Research part no. 114445) is a 26-inch, 1:7.5-twist bolt-action barrel blank built for a .257-caliber precision rifle. The faster 1:7.5 twist is cut to stabilize heavier-for-caliber .257 bullets at long range, and Proof Research’s carbon-fiber-wrapped construction keeps a 26-inch Sendero-contour blank at 3 lbs 4 oz, well under what a comparable steel barrel would weigh. With a 2.5-inch breech and 1.20-inch shank diameter, it’s ready for a gunsmith to chamber and fit to your action of choice.

Key Specifications

• Bored for .257 caliber.
• A 26-inch barrel length.
• A 1:7.5 twist rate.
• A 2.5-inch barrel breech diameter.
• A 1.20-inch shank diameter.
• Cut in Proof Research’s Sendero contour.
• Weighs 3 lbs 4 oz.

Frequently Asked Questions

What caliber and twist rate is this barrel blank? It’s a .257-caliber barrel blank with a 1:7.5 twist rate, sized to stabilize heavier-for-caliber bullets.

What length and contour is it? It’s 26 inches long in Proof Research’s Sendero contour, with a 2.5-inch breech and 1.20-inch shank diameter.

How much does it weigh? It weighs 3 lbs 4 oz.

Buy the Proof Research .257 Carbon Fiber Barrel Blank

Order this barrel blank from our Lubbock, Texas gun shop and we’ll have it ready to ship to your door. Shop the full Proof Research lineup or browse our complete rifle barrels selection.