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Forums10
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Apr 29th, 2024
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Joined: Mar 2005
Posts: 709
Sidelock
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OP
Sidelock
Joined: Mar 2005
Posts: 709 |
Alliant shows a Clay Dot 7/8 oz load in 2 3/4" hulls at 5100 psi. i use it in an old Damascus Charles Daly that somebody installed a long forcing cone 2 3/4" chamber in. Still have all my fingers. I talked to a Hogdon tech guy and he indicated that 2 1/2" shells have a much higher chamber pressure than do 2 3/4" shells with the same powder and charge due to the smaller explosion chamber. Makes one think of lengthening the chamber. Jim Pettengill I've wondered if 2 3/4" using the same load would give lower pressure then 2 1/2". You see the pressure reduction with the same powder charge when going from 2 3/4" to a 3" in the loading data. My 2 1/2 has been chambered to 2 3/4, which I am not happy about, but maybe it will help with obtaining lower pressures.
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Joined: Jan 2012
Posts: 17
Boxlock
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Boxlock
Joined: Jan 2012
Posts: 17 |
The reason I called a Hogdon Tech was that I tried it the other way, loading my favorite 2 3/4" load in a 2 1/2" hull, but with a shorter wad, and about blew up an old Baker, had a dickens of a time getting the gun open, and the primer fell on the floor when I did manage force it open. I believe the Hogdon guy's term was that the pressure would go up exponentially. Jim Pettengill
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Joined: Mar 2002
Posts: 1,815 Likes: 4
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 1,815 Likes: 4 |
I use the Same as WIld Skies above 19.5 to 20.5 Pb with one oz. Great load and reasonably clean also. 7625 and Pb are the powders of choice for the old doubles.
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Joined: Feb 2006
Posts: 3,737 Likes: 55
Sidelock
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Sidelock
Joined: Feb 2006
Posts: 3,737 Likes: 55 |
The reason I called a Hogdon Tech was that I tried it the other way, loading my favorite 2 3/4" load in a 2 1/2" hull, but with a shorter wad, and about blew up an old Baker, had a dickens of a time getting the gun open, and the primer fell on the floor when I did manage force it open. I believe the Hogdon guy's term was that the pressure would go up exponentially. Jim Pettengill You can load your favorite 2 3/4" load in a 2 1/2" hull, BUT you then have to roll crimp it. NO SUBSITUTIONS.
David
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Joined: Mar 2005
Posts: 709
Sidelock
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OP
Sidelock
Joined: Mar 2005
Posts: 709 |
This IMR 7625, I assume it is slow burning. Can it be used with a bushing or must one weigh each load?
I have both a scale and an adjustable bushing bar
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Joined: May 2004
Posts: 2,092 Likes: 13
Sidelock
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Sidelock
Joined: May 2004
Posts: 2,092 Likes: 13 |
The hodgdon site does not list any 7/8 oz. loads for PB. Am I missing something?
So many guns, so little time!
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Joined: Dec 2010
Posts: 691 Likes: 7
Sidelock
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Sidelock
Joined: Dec 2010
Posts: 691 Likes: 7 |
The hodgdon site does not list any 7/8 oz. loads for PB. Am I missing something? Look under 24 gm---24 grams is just under 7/8 ounce by a couple of hundredths of an ounce.
Wild Skies
Since 1951
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Joined: May 2004
Posts: 2,092 Likes: 13
Sidelock
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Sidelock
Joined: May 2004
Posts: 2,092 Likes: 13 |
So many guns, so little time!
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Joined: Feb 2002
Posts: 199
Sidelock
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Sidelock
Joined: Feb 2002
Posts: 199 |
The very best for pattern and low recoil.
Federal paper, federal SO wad 7/8 oz shot and 17.5 grains of bullseye.
My P guns and my Ithaca just love them.
John Mc
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Joined: Jun 2008
Posts: 5,538 Likes: 170
Sidelock
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Sidelock
Joined: Jun 2008
Posts: 5,538 Likes: 170 |
John Mc
What is the pressure?
Thanks
Mike
USAF RET 1971-95 ![[Linked Image from jpgbox.com]](http://www.jpgbox.com/jpg/57865_80x60.jpg)
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