Barrel Length?

[Prof Young]

Shooters:

I'm assuming the official barrel length of a gun does NOT include the length of the chamber. Is that correct?

Live well, be safe
Prof Young

 

[myshoulderissore]

From the back of a closed chamber to the end of the barrel. Basically from firing pin hole to exit.

http://www.atf.gov/publications/download/p/atf-p-5320-8/atf-p-5320-8-chapter-2.pdf

 

[Aguila Blanca]

From the back of a closed chamber to the end of the barrel. Basically from firing pin hole to exit.

http://www.atf.gov/publications/down...-chapter-2.pdf

But that document doesn't discuss handguns at all. Semi-auto handguns are measured from the breechface (with the slide closed and in battery) to the muzzle. Revolvers measure the barrel length as just the barrel, not including the cylinder.

 

[Edward429451]

and shotguns are measured with the bolt closed and the tape measure inside the barrel out to the edge.

 

[myshoulderissore]

So the exact same way as all guns are measured... And same as was stated.

 

[Bill DeShivs]

Revolvers are measured FROM THE FRONT OF THE CYLINDER. All other guns are measured from the breech face to the muzzle.

 

[myshoulderissore]

Now that I didn't know... But should have guessed from barrel lengths stated and my eyeballs. Live and learn!

Revolvers are measured FROM THE FRONT OF THE CYLINDER.

 

[4thHorseman]

Revolvers are measured FROM THE FRONT OF THE CYLINDER. All other guns are measured from the breech face to the muzzle.

I assume you mean the END of the cylnder, not the front? The end is where the bullet comes out and enters into the forcing cone.
See below for link video on demonstration

http://www.youtube.com/watch?v=QuGPdiv1Fj0

 

[Bud Helms]

Revolver cylinders have two ends: front and rear. The front of the cylinder is the end toward the muzzle. The cartridges are loaded into the rear of the cylinder.

Mr Diamond D Leather, in the youtube video link provided uses ambiguous terminology. He actually called the rear point of measurement on the semiauto the "end of the slide". Not so. It is the rear end of the barrel, also called the "breech face", and includes the chamber, but does not include the entire length of the slide. Watch it again.

A semiauto barrel includes the cartridge chamber (singular).

A revolver barrel does not include the chamber, actually chambers(plural). A revolver's chambers are contained in the cylinder.

 

[osbornk]

Just measure back from the muzzle on guns you know what the manufacturer says the barrel length is and see.