
Availability: In Stock
A PROOF Research .308 28" MSporter 1:9 twist stainless steel bolt-action barrel blank gives you a precision-engineered foundation for a custom rifle build. Whether you're a gunsmith, a serious reloader optimizing for a specific load, or a builder tackling a long-range hunting rifle or target gun, this blank delivers the dimensional accuracy and material quality you need without the premium markup of a finished, chambered barrel. The medium sporter contour strikes a practical balance—light enough to handle in the field, stout enough to manage recoil and hold zero through extended shooting sessions.
PROOF Research has built a reputation for tight tolerances and consistent bore quality. This .308 blank in stainless steel resists corrosion and is forgiving in less-than-ideal storage conditions, making it a smart choice if your build timeline stretches over months or if you shoot in wet climates. The 1:9 twist rate is the factory standard for .308 Winchester and handles the broad range of .308 ammunition most hunters and shooters rely on—from 150-grain hunting rounds to heavier match loads.
As an unfinished blank, this barrel requires professional chambering, headspacing, and installation. This is not a drop-in component; you'll need a competent gunsmith or a well-equipped shop to complete the work. That said, working with a blank often costs less than buying a pre-chambered barrel, and gives you full control over chamber specifications, throat length, and muzzle crowning to suit your exact reloading or performance goals.
| Caliber | .308 Winchester |
| Barrel Length | 28 inches |
| Twist Rate | 1:9 |
| Contour | Medium Sporter |
| Material | Stainless Steel |
| Weight | 3 lbs 9 oz |
| Action Type | Bolt-Action |
No. This is an unfinished blank. It requires professional chambering, headspacing, crowning, and installation by a gunsmith or qualified riflesmith before it can be used.
The 1:9 twist is the standard .308 Winchester specification and stabilizes the full range of .308 ammunition most hunters and shooters use regularly, from lighter hunting loads to heavier match rounds.
Stainless steel resists corrosion and oxidation, making it a durable choice if your build stretches over time or if you shoot in wet or humid conditions. It's also forgiving in storage.
Yes. The 28-inch length and medium sporter contour are well-suited to long-range hunting applications, though the final performance depends on your chambering, load development, and rifle setup—work that your gunsmith can guide you through.

SKU: 115824086 • Weight: 3.75oz





Availability: In Stock
A PROOF Research .308 28" MSporter 1:9 twist stainless steel bolt-action barrel blank gives you a precision-engineered foundation for a custom rifle build. Whether you're a gunsmith, a serious reloader optimizing for a specific load, or a builder tackling a long-range hunting rifle or target gun, this blank delivers the dimensional accuracy and material quality you need without the premium markup of a finished, chambered barrel. The medium sporter contour strikes a practical balance—light enough to handle in the field, stout enough to manage recoil and hold zero through extended shooting sessions.
PROOF Research has built a reputation for tight tolerances and consistent bore quality. This .308 blank in stainless steel resists corrosion and is forgiving in less-than-ideal storage conditions, making it a smart choice if your build timeline stretches over months or if you shoot in wet climates. The 1:9 twist rate is the factory standard for .308 Winchester and handles the broad range of .308 ammunition most hunters and shooters rely on—from 150-grain hunting rounds to heavier match loads.
As an unfinished blank, this barrel requires professional chambering, headspacing, and installation. This is not a drop-in component; you'll need a competent gunsmith or a well-equipped shop to complete the work. That said, working with a blank often costs less than buying a pre-chambered barrel, and gives you full control over chamber specifications, throat length, and muzzle crowning to suit your exact reloading or performance goals.
| Caliber | .308 Winchester |
| Barrel Length | 28 inches |
| Twist Rate | 1:9 |
| Contour | Medium Sporter |
| Material | Stainless Steel |
| Weight | 3 lbs 9 oz |
| Action Type | Bolt-Action |
No. This is an unfinished blank. It requires professional chambering, headspacing, crowning, and installation by a gunsmith or qualified riflesmith before it can be used.
The 1:9 twist is the standard .308 Winchester specification and stabilizes the full range of .308 ammunition most hunters and shooters use regularly, from lighter hunting loads to heavier match rounds.
Stainless steel resists corrosion and oxidation, making it a durable choice if your build stretches over time or if you shoot in wet or humid conditions. It's also forgiving in storage.
Yes. The 28-inch length and medium sporter contour are well-suited to long-range hunting applications, though the final performance depends on your chambering, load development, and rifle setup—work that your gunsmith can guide you through.

SKU: 115824086 • Weight: 3.75oz