There are five barrel-rifling methods in general use: cut, button, broach, hammer forging and ECM (electrolytic cationic machining). All have their benefits. Cut rifling is the oldest method of ...

which is the most time-consuming method for rifling a barrel. Krieger claims their barrels will last longer than button-rifled barrels. Krieger does not offer drop-in barrels except for the AR15 ...

When I was first introduced to the concept some decades ago, the explanation given to me was that the first shots through a barrel would smooth out imperfections in the bore left by the tooling that ...

“Rifled slugs have no twist rate,” Henderson says. “The slugs transit the barrel static and exit that way. There are photos from a manufacturer in my book that clearly show the rifling on the slug is ...