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Joined: Oct 2010
Posts: 151 Likes: 2
Sidelock
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OP
Sidelock
Joined: Oct 2010
Posts: 151 Likes: 2 |
Is it unusual for a 2.5" chambered gun to be proofed for 1.25oz?
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Joined: Jul 2005
Posts: 7,065
Sidelock
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Sidelock
Joined: Jul 2005
Posts: 7,065 |
The Brits had different proof marks for the same information over the decades. I can't keep track of them. When a gun had the chamber lengthened from 2-1/2" to 2-3/4" it would be required to be reproofed. The 2-1/2" proof mark would remain but the new mark might say "1-1/4 oz" or 4Tons etc...
But yes, 1-1/4 oz proof would be for 2-3/4" chambers.
Best,
Mike
Last edited by AmarilloMike; 01/07/12 10:58 AM.
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Joined: Dec 2001
Posts: 3,604 Likes: 108
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 3,604 Likes: 108 |
I've had a few 2 1/2" chambered guns, ( British), that had the 1 1/4 oz mark. And yes I did measure the chambers.
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Joined: Jul 2005
Posts: 7,065
Sidelock
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Sidelock
Joined: Jul 2005
Posts: 7,065 |
I should have written:
"But yes, 1-1/4 oz proof would be for 2-3/4" British cartridges."
Last edited by AmarilloMike; 01/07/12 12:56 PM.
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Joined: Jan 2002
Posts: 866
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 866 |
My understanding is that the standard proofing for 2 1/2" cartridges was for 1 1/8 oz. of shot but the submitter could specify a heavier proof. ie. 1 1/4 oz. Like Mike I have seen this on a few guns, particularly Greeners.
Better to keep your mouth shut and be thought stupid,than open it and confirm.
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Joined: May 2010
Posts: 1,534 Likes: 95
Sidelock
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Sidelock
Joined: May 2010
Posts: 1,534 Likes: 95 |
Seen a few Greener GP's like this.
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Joined: Dec 2001
Posts: 6,303 Likes: 222
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 6,303 Likes: 222 |
Terry and Gunman are correct. I've had three Greeners with 2.5" chambers, proofed for 1 1/4 oz of shot. These were 12 bores.
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Joined: Jul 2010
Posts: 707
Sidelock
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Sidelock
Joined: Jul 2010
Posts: 707 |
I've seen a few Charles Lancaster best sidelocks circa 1890s proofed 2.5", 1-1/4 ounce shot.
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Joined: May 2010
Posts: 1,534 Likes: 95
Sidelock
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Sidelock
Joined: May 2010
Posts: 1,534 Likes: 95 |
It was an old loaders trick to leave a little powder out and put a bit more shot in .Esspesialy for driven game . Dont also foget folks we are talking of time of felt/fiber wads and roll turn over cases.Thus the length of a loaded unfired cartridge could be longer than that of a modern crimped case.Still haveing the same case length when fired ,allowing room for the extra shot .
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