577
.224 member
Reged: 21/10/07
Posts: 7
Loc: California, USA
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What is the true bore diameter of a 6 bore ? I have a 4 bore, but I am thinking of having a 6 bore built. Maybe its a good compromise between a 4 & an 8?
-------------------- I find it difficult to accomodate myself to the stuffiness and constraint of a modern city: I prefer the Pori (forest) to the imprisonment of streets,the twinkling stars to lamps,the sigh of the primeval forest to the tramp of thousands of feet. James Sutherland 1912
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szihn
.400 member
Reged: 24/06/07
Posts: 2121
Loc: United States
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A true 6 bore is .919"
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Elephant_Man
.224 member
Reged: 02/10/07
Posts: 18
Loc: Colorado, US
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I'm just curious, isn't that about the same size as a 4 bore?
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577
.224 member
Reged: 21/10/07
Posts: 7
Loc: California, USA
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4- bore is 1052. So no, it is not. A 4 uses a 1750 grain ball,a 6 uses a 1167 grain ball.Still enough, for a most determined rabbit charge.
-------------------- I find it difficult to accomodate myself to the stuffiness and constraint of a modern city: I prefer the Pori (forest) to the imprisonment of streets,the twinkling stars to lamps,the sigh of the primeval forest to the tramp of thousands of feet. James Sutherland 1912
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szihn
.400 member
Reged: 24/06/07
Posts: 2121
Loc: United States
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Our members may find this chart interesting.

Guage Caliber 1 1.669 2 1.325 3 1.150 4 1.052 5 .955 6 .919 7 .873 8 .835 9 .803 10 .775 11 .751 12 .729 13 .710 14 .693 15 .677 16 .662 17 .649 18 .637 19 .629 20 .615 21 .605 22 .596 23 .587 24 .579 25 .571 26 .563 27 .556 28 .550 29 .543 30 .537
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JohnTheGreek
.300 member
Reged: 16/11/04
Posts: 167
Loc: Cairo, Egypt
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I'm not sure I see the practicality of having a six bore when you already own a four. I know, talking about practicality when these guns are the topic is a bit strange. Still, I think having these two diameters would be a bit like buying a .458 Lott to go with your .505 Gibbs. If I already owned a four bore and was in the market for a companion piece, I would probably have Steve Zihn make me a double barreled eight, nine, or ten bore.
JMHO,
JohnTheGreek
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577
.224 member
Reged: 21/10/07
Posts: 7
Loc: California, USA
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First of all, I am never practical, a man can't own to many guns.I also want a lighter gun.The gun will be 4-5 pounds lighter.The 4 is also For Sale.Anybody need a left hand percussion, 20 pound rifle?
-------------------- I find it difficult to accomodate myself to the stuffiness and constraint of a modern city: I prefer the Pori (forest) to the imprisonment of streets,the twinkling stars to lamps,the sigh of the primeval forest to the tramp of thousands of feet. James Sutherland 1912
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500grains
.416 member
Reged: 16/02/04
Posts: 4732
Loc: Salt Lake City, Utah USA
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Quote:
Anybody need a left hand percussion, 20 pound rifle?
How much would it cost to convert it to right handed?
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DarylS
.700 member
Reged: 10/08/05
Posts: 27701
Loc: Beautiful British Columbia, Ca...
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.577 - the 6 bore would of course shoot a ball, if patched in cloth, of about 6 1/2 bore, depending on depth of grooves. If a smooth bore, .030" or a bit more difference in bore/ball diameter in large bore guns, seems to work well. This allows a thick enough patch, to hold sufficient lube to keep the fouling soft. .035" (heavy) Denim works well in this situation.
-------------------- Daryl
"a gun without hammers is like a Spaniel without ears" King George V
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szihn
.400 member
Reged: 24/06/07
Posts: 2121
Loc: United States
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500 grains, It's not practical to convert. The stock would be a "leftie" and so would the lock and breach plug. That means you'd only be able to use the barrel, butt plate and trigger guard, and a few small parts. Most of the gun would have to be replaced, which means building one from the ground up would be as easy, and about the same cost.
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jaz
.300 member
Reged: 21/10/05
Posts: 188
Loc: Northeast US
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I have to disgree to a point. If you consider how the British proofed their guns, a 4 bore is considered anything over ,903 and under 1.026. The 4 would be proofed as a 5/2 for a very large gun. Refer to Greeners "The Gun". Not saying technically you are wrong but from how the British proof house marks them it would be incorrect. The 6 is considered a 4.
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