Do all revolvers have a forcing cone?

Forcing cone failure of any kind is rare. Most revolver shooters will never experience this. But it’s something to keep an eye on. And if you’re in the market for a used revolver, be sure to inspect the forcing cone for a crack and gas erosion.

What is the forcing cone on a revolver?

The forcing cone is the rear entrance of the barrel where the bullet transitions from the cylinder to the barrel. It protrudes into the cylinder window a little, how much varies depending on the model.

What does a lengthened forcing cone do?

Lengthening the forcing cone by 2 or 3 inches with a chamber reamer, followed by polishing, creates a longer, more gradual taper for the shot charge to transition into the smaller main bore. The hoped-for result is less pellet deformation, fewer flyers, and more uniform patterns downrange.

What is a forcing cone on a gun?

The area in a shotgun barrel just in front of the chamber that directs the shot load into the bore is called the forcing cone. In most production shotguns this forcing cone is very short and at a very steep angle. We lengthen the forcing cone to 3 inches and and polish it.

What is a force cone revolver?

Revolver barrels have a bevel at their mouth, just forward of the cylinder muzzle, commonly called a “forcing cone.” The object of this modest conical cut is to conduct the bullet into the rifling with minimal shaving and deformation and often spells the difference between an accurate revolver and a “Wanted” poster tack hammer.

What size cone should I cut for my gun?

Forcing cones should be cut within a fairly narrow range of mouth diameters. The general rule of thumb is guns that range well probably should have shorter, smaller cones since unnecessarily long cones afford more opportunity for propellant gases to devour bullet lube and soften the exposed sides of bullets better to solder-up your bore.

Why use force cone reaming tools?

While great forcing cone reaming tools are not essential to life on the planet, those that work well are a great comfort to those who use them even casually, let alone on a daily basis. Dave Manson of Manson Precision Reamers has brought professional pistolsmiths and hobbyist alike a set of tools which represent a quantum leap forward.

How to cut a forcing cone without chattering?

Tooling was often too sloppy to true up a crooked, eccentric forcing cone as the cutter just followed the loopy existing cut. Poor bushing-to-barrel fit caused chattering in the cutting which resulted in a rough, chewy finish that caused leading and unkind commentary. Closely fitted pilot bushings help minimize chatter and make for a smooth cut.