BSF Barrels SF3IYT1191 Bolt-Action 257 Weatherby 20" 1:7.5 Twist Barrel

The BSF Barrels SF3IYT1191 is a precision bolt-action rifle barrel chambered for the 257 Weatherby cartridge. At its core is a button-rifled 416R stainless steel match-grade blank that is encased in a roll-wrapped carbon fiber sleeve loaded under tension, then drilled to vent heat and help prevent delamination. The result is a barrel that aims to deliver the accuracy of a stainless match blank while shedding weight and shifting less at the point of aim under extended strings of fire.

Measuring 20 inches long with a fast 1:7.5 twist rate, this BSF barrel is built to stabilize the heavy, high-ballistic-coefficient projectiles favored in 257 Weatherby hunting and long-range work. The muzzle is cut with 5/8x24 threads, accepting a wide range of muzzle brakes, suppressors, and thread-protector accessories so the host rifle can be configured for hunting, precision, or suppressor-friendly setups.

Manufactured in the USA by BSF Barrels, the SF3IYT1191 is a drop-in replacement barrel intended for bolt-action rifle platforms chambered in 257 Weatherby. As an aftermarket component rather than a complete firearm, it is designed to be fitted by a competent gunsmith or installed by the end user following the manufacturer's published installation guidelines.