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

A.The basic methods of rifling a barrel are known as cut, broached, button and hammer forging. Attempting to state which is the best would require a lot more time and space than we have available ...

[Jeff Rodriguez] has been busy testing a feasible DIY method for rifling a barrel and has found some success using salt water, a power supply, wire, and 3D printed parts to create the grooves of ri… ...

The rifling in a barrel spins a bullet to stabilize it as it travels down range, and the twist rate of the rifling determines how many times the bullet will rotate over a given distance.