doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com 12 shell is a little loose in the chamber

Russ used to use a 10 bore brass shell to make a 12 bore chamber in a 10 gauge gun. How loose is that chamber???
bill

I think you meant to write .800 not .080. That would be about right, as some early 1900 chambers were .811 tapering to .797 in 2 3/4". For shorter chambers I still believe it would be a .014 taper.

HOmeless

It's black powder proff

sorry yo you are correct .800 or .810

I was overhearing a pawnbroker some years ago trying to sell a wall-hanger hammer SXS 12 ga to a customer:

"It'll be fine if you just shoot skeet shells in this gun" !
Yeah, really.

So jeweller thinks he is safe shooting black powder shells in this possibly unsafe gun, because it has black powder proff?

Yeah, really

Mike

I would have wall thicknesses measured before I shot it. Particularly at the end of the chamber and the 10" beyone that.

If you don't have a wall thickness gauge I recommend you find a gunsmith with one.

I hope Larry Brown doesn't read this thread.

Best,

Mike

Note that the 13 mark does not say it had a .710" bore. It says it would accept a .710" diameter plug gauge to a depth of 9" from the breech, but would not accept the next larger gauge to that depth. Prior to 1887 this would have been the 12 @ .729", After 1887 it would have been a 13/1 @ .719". The bore dia could thus have been anywhere betwee the two measurements. With the 13B/14M marks it may well have been proffed prior to the new rules adding the between sises were enacted. It could have been very close to a 12ga bore, but not accept the .729" plug & still be proofed as a 13.
It was many years after this before actual bore diameters began to be marked, rather that the "Range".

Miller, I have a WW Greener, circa 1892 that has 13 on the receiver. Am I correct in your saying that it was not a .710 bore, as there are no other numbers there?

The right bore is .727 and the left is .728. I hope that is the case as it would make me feel better about the bores.
The chokes measure .009 in right and .034 in left.
It is kind of scary looking at the muzzle end.

The barrels measure 27 1/8" and the gun weighs 6 lbs. even.

Mike
You missed my earlier thread but the gun is black powder proffed. Not nitro.I had previously measured the barrels and came up with app .050 thickness eight inches from the breach which seemed incorrect to me.Today I recieved a Brownells barrel thickness gauge. The thinnest I can get out of the gauge it .025 getting thicker near the breach but I am going to have to lock the gauge to a wall to be a little more exact.I didn't have much of a chance to work with it. In the mean time I'll take your advise and just shoot skeet shot.
Monty

NO! Monty do not shoot skeet shells in it!!
I just gave the pawnbroker illustration that the pawnbroker thought the skeet shells were "low pressure" as opposed to Canuck 2 3/4" high brass hunting loads and would be safe to shoot on the clapped out hammer gun. NOT SO!
Good heavens, someone chip in here and help me out please!
Mike