Parker 13 gauge?

[Bindlestiff]

I'm not a shell person but I seem to remember that there were two 12 gauge brass shells. I don't remember the designations used? Maybe someone could "remind" me and inform others?

[Dean Romig]

A brand new 2013 penny measures exactly .751" in four different locations across its diameter.

[Jack Hamner]

Originally Posted by Dean Romig

A brand new 2013 penny measures exactly .751" in four different locations across its diameter.

Thank you (again!) Dean. If my figures are right, a 12 gauge measures .729", a 13 ga.--.700, and a 14 ga.--.693, so a few hundredths less than .751" could be a 13 OR 14 gauge, since the 12 ga. brass was too large (.729) What diameter is a 12b that I read about in one of the posts? Is this a possibility for this gun?

[Bindlestiff]

Cast with candle wax. It will be soft so working with it may be difficult to get an accurate measurement?

[Jack Hamner]

Originally Posted by Robin Lewis

Cast with candle wax. It will be soft so working with it may be difficult to get an accurate measurement?

I thought of that too, Robin, but I was worried about chamber damage and the wax getting stuck. I don't think chamber damage would be an issue, though--I know of several people who "wax" the outside of their firearms rather than oil them.

[Dean Romig]

Jack, you're confusing 'nominal bore diameters' with chamber diameters. The chamber diameter (slightly tapered) will (almost) always be larger than the bore diameter. The diameters you show are nominal bore diameters.

[Jack Hamner]

Originally Posted by Dean Romig

Jack, you're confusing 'nominal bore diameters' with chamber diameters. The chamber diameter (slightly tapered) will always be larger than the bore diameter. The diameters you show are nominal bore diameters.

Yeah...I'm so confused at this point I think I will just wait until I can get a reliable gunsmith to take measurements for me and come up with a definitive answer. I'm just such an impatient person that I think I can get answers to everything "right now". I guess I'm going to have to learn to be a little more patient!

[Smoothebore]

You're doing good, Jack. Sorry I type so slow, a lot of posts while I was hunting and pecking. Dean is simply stating that the muzzle size has nothing to do with gauge. It's all in the chambered shell.

[Smoothebore]

First, bore is measured in inches. 18 millimeters is .709 inch. I don't know what that means, except it's probably smaller than a 12ga gun. Accurate bore and chamber dimensions will have to be taken with a gage that can measure in thousanths of an inch.

[edgarspencer]

According to Circle Fly, 13ga. is .710" Since I can't find any published dimensions for Chambers, I'd be more inclined to rely on the info that is published, i.e., Bore dimensions.
I applaud your enthusiasm, and know well what you mean by being impatient, but using dowels, sanded PVC pipes, etc, to attempt to find something that is measured in .001" is akin to using binoculars, when a microscope is called for.

Why don't you let us know where you live, and perhaps you might find a PGCA member close by who owns a Chubb, or similar bore gauge. I have one, and live in N.Central CT.