A Proof Research 308 Cal 22" Sendero Contour Bolt Action Barrel Blank is a carbon fiber–wrapped barrel designed for the serious rifle builder or gunsmith. This is the raw component—no threads or chamber yet—so you'll work with a gunsmith to finish it to your exact specifications. The Sendero contour strikes a balance between rigidity and weight, making it a practical choice for hunters and long-range shooters who want to lighten their rig without sacrificing barrel life or accuracy potential.

The standout feature here is Proof Research's carbon fiber construction. By wrapping a match-grade steel core in carbon fiber, Proof delivers a barrel that's substantially lighter than a traditional steel blank while maintaining the dimensional stability and thermal properties shooters rely on. The 1:10" twist rate suits standard 308 Winchester loads and bullets in the typical hunting and target range, while the 5-groove design supports consistent bullet engagement and accuracy.

If you're building a custom rifle and weight matters—whether you're glassing hillsides all day or running a precision competition rig—this blank gives you the foundation to do it right. The carbon fiber wrap also resists corrosion and cosmetic damage better than bare steel, so your rifle will look good after hard use. Once your gunsmith threads the muzzle and chambers the breech to your preferred specifications, you'll have a finished barrel ready to mount and shoot.

A Proof Research 308 Cal 22" Sendero Contour Bolt Action Barrel Blank is a carbon fiber–wrapped barrel designed for the serious rifle builder or gunsmith. This is the raw component—no threads or chamber yet—so you'll work with a gunsmith to finish it to your exact specifications. The Sendero contour strikes a balance between rigidity and weight, making it a practical choice for hunters and long-range shooters who want to lighten their rig without sacrificing barrel life or accuracy potential.

The standout feature here is Proof Research's carbon fiber construction. By wrapping a match-grade steel core in carbon fiber, Proof delivers a barrel that's substantially lighter than a traditional steel blank while maintaining the dimensional stability and thermal properties shooters rely on. The 1:10" twist rate suits standard 308 Winchester loads and bullets in the typical hunting and target range, while the 5-groove design supports consistent bullet engagement and accuracy.

If you're building a custom rifle and weight matters—whether you're glassing hillsides all day or running a precision competition rig—this blank gives you the foundation to do it right. The carbon fiber wrap also resists corrosion and cosmetic damage better than bare steel, so your rifle will look good after hard use. Once your gunsmith threads the muzzle and chambers the breech to your preferred specifications, you'll have a finished barrel ready to mount and shoot.