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Black Powder Pressure Data in Wright's Book???
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Picture of Will
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I have Wright's book somewhere, the 2nd Ed. I think, but it has been buried under too much junk as I can't find it at the moment.

If anyone is more organized then I and just happens to have their copy(ies) handy, did Wright ever measure pressures for the black powder loads?

Thanks.


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Will / Once you've been amongst them, there is no such thing as too much gun.
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and, God Bless John Wayne. NRA Benefactor, GOA, NAGR
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Posts: 19389 | Location: Ocala Flats | Registered: 22 May 2002Reply With Quote
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yes he did.

the 3'ed edition there are a some pressure tests of both NfB and Black powder loads.

What do you need, Will ?

best

peter
 
Posts: 1336 | Location: denmark | Registered: 01 September 2007Reply With Quote
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If there is a comparison between the .450 NE and the .450 Nitro for Black, that would be of interest. Where my copy is I don't know.

According to Kynoch the .450 NE spits out a 500 gr. bullet at 2150 ft/s and 17 tonnes in a 28" barrel.

The .450 Nitro for Black is chucking a 350 gr. at the same velocity in the same 28" bsrrel but they don't say what the pressure might be.

If there is a 1 to 1 comparison for pressure difference that you could supply, that would be great.


-------------------------------
Will / Once you've been amongst them, there is no such thing as too much gun.
---------------------------------------
and, God Bless John Wayne. NRA Benefactor, GOA, NAGR
_________________________

"Elephant and Elephant Guns" $99 shipped.
“Hunting Africa's Dangerous Game" $20 shipped.

red.dirt.elephant@gmail.com
_________________________

If anything be of note, let it be he was once an elephant hunter, hoping to wind up where elephant hunters go.

 
Posts: 19389 | Location: Ocala Flats | Registered: 22 May 2002Reply With Quote
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Will,

Another source for black powder or nitro for black pressures would be Sherman Bell's articles in Double Gun Journal if Wright doesn't have what you're looking for. Bell did a lot of comparisons, iirc.

JPK


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Posts: 4900 | Location: Chevy Chase, Md. | Registered: 16 November 2004Reply With Quote
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will

350 soft point:

110 grains swiss 3fg: fed 215: 1680 fps: 9,0tpsi

140 grains swiss 1½fg: fed 215: 1725 fps: 9,0tpsi

Nitro for Black

70 grains Varget + cork wads: WLR: 1970 Fps: 9,2 Tpsi

52 grains IMR 4198 + dacron filler: RWS 6507: 1860 fps: 8,2 Tpsi

hope this helps.

best

peter

this data were from G. Wright's book: shooting the British double rifle, a must for every double rifle shooter
 
Posts: 1336 | Location: denmark | Registered: 01 September 2007Reply With Quote
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Peter,

Excellent.

It shows, like everybody but I knew already, that indeed the mass of black powder has to be twice or more the weight of smokeless powder to get to the same place.


Thanks.

Bill


-------------------------------
Will / Once you've been amongst them, there is no such thing as too much gun.
---------------------------------------
and, God Bless John Wayne. NRA Benefactor, GOA, NAGR
_________________________

"Elephant and Elephant Guns" $99 shipped.
“Hunting Africa's Dangerous Game" $20 shipped.

red.dirt.elephant@gmail.com
_________________________

If anything be of note, let it be he was once an elephant hunter, hoping to wind up where elephant hunters go.

 
Posts: 19389 | Location: Ocala Flats | Registered: 22 May 2002Reply With Quote
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