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Forums10
Topics37,969
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Most Online695
Nov 17th, 2023
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Joined: May 2009
Posts: 55
Sidelock
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OP
Sidelock
Joined: May 2009
Posts: 55 |
I was wondering if anyone on this forum is familiar with english 11 bores? Just received in the mail my Jas king London 11 bore and was looking for any info on the peice thanks A.J.
Last edited by Northup87; 02/06/10 12:36 PM.
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Joined: Jan 2003
Posts: 2,817 Likes: 9
Sidelock
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Sidelock
Joined: Jan 2003
Posts: 2,817 Likes: 9 |
I've seen 12 bores proofed as 11s or big 11s, but never a gun that's was made for an 11-gauge shell.
What do the proof marks look like?
OWD
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Joined: May 2009
Posts: 55
Sidelock
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OP
Sidelock
Joined: May 2009
Posts: 55 |
Well its marked on both barrels with and 11... A standard 12 gauge round is to small and a Brass ten gauge american round is far to big... I know English 10 bore round are a bit smaller but this is quite a bit smaller.. The proofs are a crown.. and something under it I will post some pictures tommorow.. thanks again A.J.
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Joined: Feb 2006
Posts: 1,597 Likes: 13
Sidelock
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Sidelock
Joined: Feb 2006
Posts: 1,597 Likes: 13 |
A brass Parker 12B should fit if you can find one - the 12B is a true 11 bore.
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Joined: May 2009
Posts: 55
Sidelock
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OP
Sidelock
Joined: May 2009
Posts: 55 |
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Joined: Jul 2006
Posts: 1,164 Likes: 11
Sidelock
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Sidelock
Joined: Jul 2006
Posts: 1,164 Likes: 11 |
Birmingham Black powder proof marks, Pre 1904,for 11G bore size [Bore diameter should measure between.751 -.762 inches to still be in proof.]Chamber size will determine whether the gun was made as a 12G or a 10 G. Weight of the gun will also be a clue as to its design size.My opinion is that it is likely to be 10G because many guns of this vintage,[pre the introduction of choke boring] were bored one gauge smaller than nominal [ie; many 12G guns of this vintage were bored and proof tested at 13G.], I think that the objective was to improve pattern density.Others have suggested it was a wear allowance to allow for a future reproof of damacus/twist barrels.Recommend that you have a gunsmith measure the chamber size and compare results with the dimensions specified in the relevant rules of proof.
Last edited by Roy Hebbes; 02/06/10 05:14 PM.
Roy Hebbes
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Joined: May 2009
Posts: 55
Sidelock
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OP
Sidelock
Joined: May 2009
Posts: 55 |
It is definetly a heavy gun 8 1/2 pound range very thick barrels, so, would that make it a ten gauge and if so what type of round would it be?
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Joined: Jul 2006
Posts: 1,164 Likes: 11
Sidelock
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Sidelock
Joined: Jul 2006
Posts: 1,164 Likes: 11 |
The "Modern Shot Gun," Vol;3,by Burrard, pages 202-3 details the standard chamber lengths and corresponding loads for 10G black powder cartridges.I would recommend inspection of your gun by a competent gunsmith and his/her confimation that the barrels measure,"In Proof," and that the barrel wall are of a satisfactory thickness,prior to any use.Provided the gun is approved by such an inspection, you may wish to consider using the loading recommended by Burrard for 2 5/8 chambers even if the chamber measures longer than 2 5/8[ Play it safe!].
AS A PRECAUTION ,PLEASE DOUBLE CHECK BURRARDS POWDER CHARGE RECOMMENDATION, HE STATES DRACHMS THIS COULD BE A SERIOUS ERROR AND SHOULD READ DRAMS![SEE GOUGH THOMAS, "GUN BOOK," PAGE 266].
BLACK POWDER USERS, PLEASE COMMENT ON THIS POTENTIAL SAFETY ISSUE?
Roy Hebbes
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Joined: Dec 2008
Posts: 571 Likes: 9
Sidelock
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Sidelock
Joined: Dec 2008
Posts: 571 Likes: 9 |
I have Birmingham underlever that is stamped like yours except it has a 13. It is a 12 bore though.
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Joined: Dec 2001
Posts: 12,743
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 12,743 |
BLACK POWDER USERS, PLEASE COMMENT ON THIS POTENTIAL SAFETY ISSUE? Merriam Webster's Collegiate Dictionary Drachm; chiefly Brit Dram My take; "IF" Gough Thomas would have spent as much time Studying & Learning from Burrard as he did trying his utmost to make him look bad the Whole World would have been the better for it. The term Drachm is found quite common in older writing in reference to Black Powder & always meant the common Dram, thus no safety factor involved.
Miller/TN
I Didn't Say Everything I Said, Yogi Berra
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