Visit Drew Hause's homepage! | |
07-12-2018, 12:09 PM | #73 | ||||||
|
It does appear that Coxe was simply converting tons X 2240 to derive psi.
From “Smokeless Shotgun Powders: Their Development, Composition and Ballistic Characteristics”, 1927, a DuPont Oval Pamphlet, p.20. Dram Eq. is listed on the graph as 3; charge was 1 1/4 oz. Pressure is expressed in Long Tons. Using Burrard’s estimated Tons Lead Crusher Pressure (Cp) conversion to PSI (pound force per square inch): (Cp x 1.5) - .5 = TSI; TSI X 2240 = PSI in BLACK IF Coxe was simply converting Tons X 2240 to estimate the PSI in BLUE and is compatible with other 3 Dr. Eq. published measurements (+ 10-14% for modern transducer numbers) Ballistite maximum pressure at 1” was 4.9 Long Tons = 15,344 psi (by Burrard) or 10,976 psi Schultze at 1 3/4” was 4.5 Long Tons = 14,000 psi or 10,080 DuPont Bulk at 1 2/3” was 4.1 Long Tons = 12,656 psi or 9,184 FFFg at 1 1/2” was 3.8 Long Tons = 11,648 psi or 8,512 DuPont Oval at 2” was 3.5 Long Tons = 10,640 psi or 7,840 I wish he'd just used the Tarage table for psi instead Or maybe he did, and for some unfortunate reason chose to express the numbers as Long Tons?? The BLUE psi numbers are similar to “Smokeless Shotgun Powders: Their Development, Composition and Ballistic Characteristics”, 1933. The pressure curves (PSI by LUP) are also for a 3 Dr. Eq. 1 1/4 oz. load (+ 10-14%) DuPont MX = 9,800 psi DuPont Bulk = 9,600 psi FFFg = 9,000 psi DuPont Oval = 8,700 psi
__________________
http://sites.google.com/a/damascuskn...e.com/www/home Last edited by Drew Hause; 07-12-2018 at 12:35 PM.. |
||||||
04-04-2021, 12:17 PM | #74 | ||||||
|
Interesting that a statement was made that live bird shooting was dead by 1900. Later in the thread a 1910 shoot was described. Also interesting that my grandfather did not close his bird ring in Hazleton until 1927, two years before his death. I am still shooting the barrels from Captain Money's 1897 CH grade pigeon gun. However, they are now mounted on a later DH grade gun, but still active.
|
||||||
04-04-2021, 02:17 PM | #75 | ||||||
|
The last Interstate Association GAH at Live Birds was in KC at Elliott's Blue River Park in 1902
http://www.trapshooters.com/threads/...-birds.208505/ https://www.trapshooters.com/threads...c-1900.824043/ Live Bird competitions continued long thereafter https://www.trapshooters.com/threads...gramme.825695/
__________________
http://sites.google.com/a/damascuskn...e.com/www/home |
||||||
The Following User Says Thank You to Drew Hause For Your Post: |
Pigeon guns |
04-06-2021, 10:13 PM | #76 | ||||||
|
Pigeon guns
Here are two Pigeon guns that are consecutive serial numbered, both with 32" Whitworth barrels marked pigeon gun. What is neat is one is a AA Hammer gun and the other is a AAHE. PGCA letter confirms both as pigeon guns, will have this pair in Sanford for display
|
||||||
The Following 14 Users Say Thank You to Gary Carmichael Sr For Your Post: |
04-06-2021, 10:38 PM | #77 | ||||||
|
Now that is one beautiful set! WOW.
|
||||||
04-07-2021, 07:28 AM | #78 | ||||||
|
Gary, i am so glad to see that AAHE again, where it is now. Looks great, thank you.
|
||||||
04-07-2021, 07:54 AM | #79 | ||||||
|
That pair of AA Parkers is probably the only ones in existence, consecutively numbered, one being a hammer gun the other a hammerless and both being Grade-7. It’s good to see that AAHE where it belongs.
.
__________________
"I'm a Setter man. Not because I think they're better than the other breeds, but because I'm a romantic - stuck on tradition - and to me, a Setter just "belongs" in the grouse picture." George King, "That's Ruff", 2010 - a timeless classic. |
||||||
The Following User Says Thank You to Dean Romig For Your Post: |
04-07-2021, 09:46 AM | #80 | ||||||
|
Thanks all, Dean had a lot to do with me acquiring that AAHE picked it up for me, took several months to make the deal but persistence pays off, Gary
|
||||||
The Following 2 Users Say Thank You to Gary Carmichael Sr For Your Post: |
|
|