mickey
.416 member
Reged: 05/01/03
Posts: 4647
Loc: Pend Oreille Valley, Idaho
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Ed
Here are the dimensions of the 4 Bore
Imperial Cartridge. Brass
Length with bullet 4.832"
Length 4.259"
Diameter of rim 1.192"
Diameter of case at rim 1.091"
Thickness of rim .17"
Diameter of case at bullet 1.275"
Diameter of bullet .835"
Kynoch. Paper Shotgun
Length 3.891"
Diameter of rim 1.19"
Diameter at rim 1.078"
Thickness of rim .175
Diameter of case 1.022"
Loaded with BBs
marked Eley-Kynoch 4
These are loaded rounds. Not having a 4 bore I haven't shot it too get an empty case. 
The Imperial Cartridge cases were loaded as recently as 10 years ago and they may still be available. They were a limited run for a pair of 4 bore singles made by London Guns in Melbourne Australia.
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Lovu Zdar
Mick
A Man of Pleasure, Enterprise, Wit and Spirit Rare Books, Big Game Hunting, English Rifles, Fishing, Explosives, Chauvinism, Insensitivity, Public Drunkenness and Sloth, Champion of Lost and Unpopular Causes.
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hubel458
.375 member
Reged: 13/02/04
Posts: 649
Loc: Brinton,MI-USA
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Mickey--if you have a chance please check the
sizes on the brass case.the diameter you show of the
case at bullet or the top, seems to big.The bullet size listed seems
to small.The smallest I have seen in books is .935 in..Ed.
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Ed Hubel
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mickey
.416 member
Reged: 05/01/03
Posts: 4647
Loc: Pend Oreille Valley, Idaho
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Ed
Diameter of case at bullet is 1.0275. My mistake. Bullet at case edge is .983. Again my mistake. Just because I have a caliper doesn't make me a Machinist.
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Lovu Zdar
Mick
A Man of Pleasure, Enterprise, Wit and Spirit Rare Books, Big Game Hunting, English Rifles, Fishing, Explosives, Chauvinism, Insensitivity, Public Drunkenness and Sloth, Champion of Lost and Unpopular Causes.
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475Guy
.400 member
Reged: 22/08/03
Posts: 1088
Loc: Kali, US
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Is that like having a gun don't make you a marksman or some such?   
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Lo do they call to me,
They bid me take my place among
them in the Halls of Valhalla,
Where the brave may live forever.
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hubel458
.375 member
Reged: 13/02/04
Posts: 649
Loc: Brinton,MI-USA
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Thanks Mickey.That bore dia will work great with the brass
I use to make them. That size also gets it closer
to a true 4 bore size as opposed to the .935 shown in the
books for 4 bore paper shotshells. True 4 bore would be
1.05 I think, and to get it that big, the 20mm brass
wouldn't have a big enough rim.What is the weight of
the 4 bore bullet in the Imperial case?.Ed
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Ed Hubel
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mickey
.416 member
Reged: 05/01/03
Posts: 4647
Loc: Pend Oreille Valley, Idaho
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Ed
I don't know the bullet weight as the it is a loaded round. I don't have a scale that can weigh the whole thing any closer than a 1/4 pound. (the baby scale)
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Lovu Zdar
Mick
A Man of Pleasure, Enterprise, Wit and Spirit Rare Books, Big Game Hunting, English Rifles, Fishing, Explosives, Chauvinism, Insensitivity, Public Drunkenness and Sloth, Champion of Lost and Unpopular Causes.
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