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Proof Research built its reputation on carbon fiber barrels that stay light, stay cool, and shoot like the finest precision steel, and this .264 Winchester Magnum blank is a prime example. It starts life as a full-profile, match-grade 416R stainless steel blank drilled and rifled in-house, then gets turned down to a slim contour and wrapped in high-strength, aerospace-grade carbon fiber. The result is a barrel that can run up to 64% lighter than a comparable all-steel contour while keeping the rigid external structure that helps it hold zero.
That carbon fiber isn't just about saving weight. The wrap moves heat through the barrel wall far more efficiently than a bare steel contour, so the barrel cools quicker and shrugs off point-of-impact shift during longer strings. For a magnum that's known to run hot, that thermal behavior matters. You get the handling and balance of a lightweight sporter with the stiffness and cooling closer to a heavy barrel, which is a hard combo to beat on a long day covering steep country.
The 1:8 twist is the sweet spot for the .264 Win Mag. The old factory Model 70 rifles ran a slower 1:9, which handles 140-grain class bullets fine, but the faster 1:8 opens the door to the heavier, higher-BC 6.5mm match and hunting bullets in the 150-grain range that make this cartridge shine at distance. Paired with the Sendero contour and a full 26 inches of barrel, you're set up for a flat-shooting long-range build.
This is a blank, not a drop-in part. It ships ready for your gunsmith to chamber, thread, crown, and headspace to your action. The steel core gives your smith a proven foundation to work with, and because it's a blank you have full freedom on chamber, contour finishing, and fitment for the action you're building on. If you already know the specs your build needs, this is a straightforward path to Proof performance in a classic 6.5mm magnum.
This is a blank, so it's not a drop-in part. It ships ready for a qualified gunsmith to chamber, thread, crown, and headspace to your specific action. The 416R stainless core gives your smith a proven steel foundation to machine against.
The 1:8 twist is the versatile choice for this cartridge. It stabilizes the heavier, higher-BC 6.5mm bullets in the 150-grain range that give the .264 Win Mag its long-range edge, while still handling the common 140-grain class loads with no trouble.
Two big things: weight and heat. The carbon wrap can cut up to 64% of the weight compared to a similar all-steel contour, and it moves heat through the barrel wall efficiently so it cools faster and resists point-of-impact shift during strings of fire. You get lightweight handling with stiffness and cooling closer to a heavy barrel.
Yes. Because it's a blank, your gunsmith can finish it to a standard .264 Win Mag chamber or a custom wildcat based on the case. Keep in mind wildcats lack standardized dimensions, so accuracy and velocity depend on the specific build and reamer.
| UPC | 843068100929 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 100929 |
| Caliber/Gauge | .264 Winchester Magnum |
| Length | 26" |
| Model | |
| Product Type | Rifle |
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