Winchester Model 70 barrels are made in the same American factory that produces barrels for the rifles and machine guns used by the U.S. Armed Forces around the world. With the exception of the stainless version, every Model 70 barrel is cold hammer-forged from a solid billet of steel for accuracy and long life. Massive rotary hammers shape the barrel steel around a mandrel to create the rifling. The barrel is threaded, target crowned and installed on the receiver. The chamber is then reamed and the bolt is headspaced. This way you can expect 1 MOA accuracy of three-shot groups from your Model 70 using a properly managed barrel, quality match ammo and superior optics under ideal weather and range conditions.