Parker 13 gauge?

[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.

[Jack Hamner]

Originally Posted by 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.

Thanks, Edgar. I know I'm beating a dead horse, but I'm cooped up here due to snow and cold and can't get out much. I guess the old cabin fever has struck
I live in Palmyra, Virginia, about 20 miles southeast of Charlottesville. There's a guy at Woodbrook Sports in Charlottesville who has a bore gauge, but everytime I stop by there, he's gone, and no one else knows where the gauge is!


P.S.--the pvc pipe test measured .724" on an electronic caliper, but probably not very accurate on my end of the measurement

[edgarspencer]

Originally Posted by Jack Hamner

P.S.--the pvc pipe test measured .724" on an electronic caliper, but probably not very accurate on my end of the measurement

Accounting for friction, and that you were able to push it through, it's sounding more like a 12 than a 13.
There are a lot of PGCA members in your neck of the woods.

[Jack Hamner]

Originally Posted by edgarspencer

Accounting for friction, and that you were able to push it through, it's sounding more like a 12 than a 13.
There are a lot of PGCA members in your neck of the woods.

Right--I think a "regular" 12 measures .729" or so.

P.S. If there are any PGCA members near me with a bore gauge, I will be happy to come to you--just reply to this thread or send me a PM and THANKS!!!


PPS-- I'm so confident in my methodology and measuring ability that once a bore gauge is employed, I'm willing to bet that my calculations are no more than an inch off! Just kidding!!!

[Jack Hamner]

Originally Posted by Dave Purnell

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.

Thanks again, Dave. I was just using centimeters because they're easier to read on a ruler than trying to figure out hundredths or thousandths of an inch on the ruler. Obviously, the ruler is not an accurate enough measurement. I was just using what I had for a rough guesstimate until I can find something else. Thanks for all your help! Jack.

[Jack Hamner]

Originally Posted by Dave Purnell

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.

Thanks, Dave--that's what it's going to take!