Description

Crowning refers to contouring the muzzle end of the barrel. It typically involves creating a slight depression or angled surface at the very end of the barrel.

The purpose of crowning is to:
– Protect the rifling at the muzzle
– Ensure the bullet exits the barrel uniformly
– Allow gases to escape evenly as the bullet leaves
– A proper crown is sharp and square to the bore. Common crown angles are 11 degrees or 60 degrees.
– Crowning can help improve accuracy by ensuring consistent bullet release from the barrel.

The process typically involves:
– Dialing in the muzzle by the bore
– Using a piloted cutter to cut the crown at the desired angle
– Creating a chamfer at the lands (rifling)