A Proof Research shouldered pre-fit carbon fiber barrel chambered in 300 Winchester Magnum, listed by the distributor for the Defiance Ruckus action. It runs 24" in the Sendero contour with a 1:10 twist. The pre-fit design lets the barrel be installed on its matching action without custom chambering, and the carbon fiber build cuts weight compared with a steel barrel of similar contour.
- Brand: Proof Research
- Type: Carbon fiber rifle barrel
- Caliber: 300 Winchester Magnum
- Barrel length: 24"
- Twist rate: 1:10
- Contour: Sendero
- Fits: Defiance Ruckus action (shouldered pre-fit)
