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This Proof Research barrel blank represents a significant step up from traditional steel options if you're building a precision rifle that doesn't sacrifice accuracy for lighter weight. The 264 caliber with 1-8 twist rate and Sendero contour is designed for shooters working with heavier projectiles in the 6.5mm range, whether you're chasing distance or building a mountain hunting rifle.
The engineering here sets Proof apart from other carbon barrel manufacturers. Starting with a full-profile, match-grade 416R stainless steel blank, Proof's team turns down the barrel to a significantly reduced profile before wrapping it in aerospace-grade carbon fiber using a proprietary helical pattern and resin matrix developed by their advanced composites division. This isn't just wrapping material around steel—it's seven different layers of carbon at varying angles, engineered specifically for thermal conductivity. The helical wrapping pattern allows the carbon fibers to efficiently dissipate heat along the length of the barrel rather than insulating it, which is why these barrels cool faster than heavier steel contours while maintaining point-of-impact consistency.
At 2.5 lbs, this barrel is up to 64% lighter than comparable steel barrels without compromising stiffness or accuracy. The aerospace-grade carbon fiber used has specific strength roughly 30 times greater than stainless steel and specific stiffness seven times greater, meaning you're getting match-grade rigidity in a package that won't wear you down on long walks or during extended shooting sessions. The proprietary resin system keeps thermal expansion predictable, which matters for maintaining zero across temperature swings that would cause lesser barrels to wander.
This arrives as a blank ready for your gunsmith to thread and chamber to your preferred specification. The 2.5-inch breech length and 1.20-inch shank diameter are standard for most modern bolt actions. The Sendero contour works well in conventional rifle stocks and delivers a good balance between ergonomics and performance. Proof manufactures using single-point cut rifling, lead lapping, and quality control checks throughout production.
No, this is a barrel blank that arrives unthreaded and unchambered. You'll need to work with a qualified gunsmith to thread the muzzle and chamber it to your preferred specification. Proof Research designs these blanks to give builders flexibility across different calibers and actions within the .264 family.
This barrel comes in at 2.5 lbs and is up to 64% lighter than comparable steel barrels of the same contour. That weight savings becomes meaningful over the course of a hunting day or when you're working uphill.
The aerospace-grade carbon fiber used in these barrels is durable and resistant to nicks, dings, and scratches during normal handling. The wrap is designed to withstand demanding field conditions while maintaining the barrel's thermal and accuracy characteristics.
Yes, the 1-8 twist is appropriate for 264 caliber and handles a wide range of bullet weights. This twist rate is commonly used for heavier projectiles in the 6.5mm range, including options for 6.5 Creedmoor, 6.5×284, 260 Remington, and 264 Winchester Magnum depending on how your gunsmith chambers it.
| UPC | 843068105467 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 105467 |
| Length | 16.5'' |
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