The Proof Research PXT carbon fiber Sendero barrel blank in .264 caliber is an 18-inch blank with a 1:7.5 PXT twist (Proof Research part no. 152294). It ships ready for your gunsmith to thread and chamber, so you decide the cartridge and the muzzle treatment. PXT, or Proof Exponential Twist, is a rifling design Proof says reduces engraving force and throat wear while the carbon fiber wrap holds weight down. It is aimed at custom builders putting together a lightweight .264 rifle from Proof Research.

Key Specifications

• The caliber is .264, supplied as an unchambered blank for your gunsmith to chamber.
• Barrel length is 18 inches, a short length for a lightweight bolt-action rifle.
• The rifling is a 1:7.5 PXT twist, Proof Exponential Twist, designed to ease the bullet into the rifling.
• The contour is Sendero, the profile Proof pairs with this carbon fiber blank.
• Weight is 2 lb 8 oz, a light figure for an 18-inch barrel.
• Breech length is 2.5 inches and shank diameter is 1.20 inches, the dimensions your gunsmith needs to fit it to the action.
• Construction is aerospace-grade carbon fiber in a proprietary matrix resin, which Proof rates up to 64% lighter than a steel barrel of similar contour.

Frequently Asked Questions

Is the .264 barrel chambered? No. It is a blank that ships ready for your gunsmith to thread and chamber.

What is the twist rate? The rifling is a 1:7.5 PXT twist over an 18-inch length with a Sendero contour.

What is PXT rifling? PXT is Proof Exponential Twist, a rifling geometry Proof designed to reduce engraving force and throat erosion and to smooth the bullet’s engagement with the rifling.

Buy the Proof Research PXT Carbon Fiber Sendero Barrel Blank, .264 Caliber, 18-Inch, 1:7.5 Twist

Build a lightweight .264 around a barrel that Proof made for custom rifles. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and see more rifle barrels while you are here.