Rifling a barrel was first done successfully in the gun shops of Augsburg, Germany, in 1498. Early rifle makers had to deal with a great many problems in order to successfully rifle a barrel.

All have their benefits. Cut rifling is the oldest method of rifling a gun barrel. The cut-rifling method removes metal from the surface of the bore to create the grooves using a single-bladed ...

After precision reaming, the robot transports the two gun-drilled and reamed barrels to a blow-off station and then loads them into the R-series rifling machine. Gun drilling, reaming and rifling ...

Proving that the open source movement is something that ought to be feared and revered, an engineer in Wisconsin has taken the world's first 3D printed gun ... added rifling to his barrel.