Product Overview
PXT Bolt-Action Barrel Blanks
PROOF Research PXT carbon fiber barrel blanks combine next-generation rifling technology with the lightweight performance and precision that have defined PROOF barrels for years. PXT - PROOF Exponential Twist - is a complete rethinking of conventional rifling geometry and twist progression; engineered to reduce engraving force; minimize throat erosion; and create a smoother transition as the projectile engages the rifling.
By dramatically reducing rifling lead angle and smoothing projectile engagement into the bore; PXT technology helps reduce wear; improve consistency; and create less felt torque during firing for improved recoil control and the ability to stay on target more effectively.
In controlled testing; PXT barrels have demonstrated 30-100% increase in barrel life while maintaining the accuracy standards expected from a PROOF barrel.
Built around PROOF's proven carbon fiber construction; PXT barrel blanks provide exceptional stiffness-to-weight ratio and reduced overall rifle weight without sacrificing performance. Designed for custom rifle builders and gunsmiths; these blanks offer a premium foundation for lightweight hunting rifles; precision long-range systems; and modern high-performance rifle builds where consistency and durability matter most.
SPECS
| SKU | Caliber | Barrel Length | Twist Rate | Breech Length | Shank Diameter | Contour | Weight |
| 154106 | 224 | 16.5” | 8 PXT | 2.5” | 1.20” | Sendero | 2lb 8oz |
| 154137 | 224 | 20” | 8 PXT | 2.5” | 1.20” | Sendero | 2lb 14oz |
| 152287 | 264 | 16.5” | 7.5 PXT | 2.5” | 1.20” | Sendero | 2lb 8oz |
| 152324 | 264 | 20” | 7.5 PXT | 2.5” | 1.20” | Sendero | 2lb 13oz |
| 152010 | 284 | 22” | 8 PXT | 2.5” | 1.20” | Sendero | 2lb 15oz |
| 154212 | 308 | 16.5” | 10 PXT | 2.5” | 1.20” | Sendero | 2lb 6oz |
| 154274 | 308 | 22” | 9 PXT | 2.5” | 1.20” | Sendero Light | 2lb 11oz |
PROOF Barrels
Carbon Fiber | Traditional Steel |
| Lightweight: Up to 64% lighter than traditional steel barrels of similar contour. | Long-Lasting: Excellent erosion wear characteristics and corrosion resistance. |
| Extreme Temperature Resistance: Improved heat dissipation for cooler and longer lasting barrels. | Extreme Pressure Resistance: An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing. |
| Unprecedented Durability: Wrapped with high-strength; aerospace-grade carbon fiber impregnated with a proprietary matrix resin. |
