Proof Research Sendero Barrel Features The Proof Research Sendero Barrel is built with a carbon fiber-wrapped construction that provides match-grade accuracy while cutting substantial weight compared to a traditional steel barrel of the same length. The improved heat dissipation of the carbon fiber wrap means the barrel stays cooler through strings of fire helping maintain accuracy during extended range sessions or follow-up shots on game. This construction also reduces harmonic barrel vibration which contributes to more consistent shot placement. Chambered in .300 Win Mag with a 1-10 twist rate suited to a wide range of bullet weights in this magnum cartridge the barrel arrives ready for a gunsmith to thread and chamber it to the Tikka T3X action with 5/8x24 muzzle threading already cut. At just over 2 pounds this barrel dramatically reduces the overall weight a hunter carries into the field without sacrificing durability since it is nearly impervious to the nicks dings and weather exposure that can affect a traditional steel barrel. This combination of strength and weight savings makes the Sendero a premium upgrade available for sale at GrabAGun. Proof Research Sendero Barrel Specifications Brand: Proof Research Model: Sendero Caliber: .300 Win Mag Barrel Length: 24 Twist Rate: 1:10 Contour: Sendero Fits: Tikka T3X Muzzle Threads: 5/8x24 Weight: 2.13 lbs Available At: GrabAGun