Parker 12g loads
 

I've been working on this
https://docs.google.com/a/damascuskn...aAfUOZEFU/edit

and reviewing old threads. I believe Bro. Bruce posted this c. 1900 hang tag several times, and it has been repeated that 12g guns were patterned with 1 1/8 oz. 3 Dram Eq.
Turns out that 40 grains of DuPont Bulk Smokeless is 3 1/4 Dram Eq.

http://pic20.picturetrail.com:80/VOL.../410047689.jpg

For comparison, the 1933 edition of ”Smokeless Shotgun Powders” by Wallace Coxe and E.I. du Pont de Nemours & Co. reported the LUP pressure for 1 1/4 oz. 3 Dram Eq. of DuPont bulk smokeless at 9,600 psi.

A 1963 George Herter Reloaders Handbook lists 23 grains (3 1/4 Eq.) of Infallible, now Unique Dense Smokeless, with 1 1/8 oz. shot in a paper case with paper wads (card & fiber) at 8,725 psi by LUP. By modern piezoelectric transducers that would be more like 9,500 psi.

My apology to Mark Ouellette who posted the Herter information; meant to attribute the information to him.

And courtesy of Researcher from the 1903 Baltimore Arms Co. catalog

3 Dr. Eq. 1 1/8 oz. ‘Trap’ load recommendations:
New Schultze & New “E.C.” - 33 grains (12 grains/drachm)
Old Schultze & “E.C.” No. 1 - 39 grains (14 grains/drachm)
L&R “Infallible” - 22 grains
Ballistite - 24 grains
DuPont Bulk Smokeless - 36 1/2 grains
Hazard Bulk Smokeless - 3 Dram
New Green Walsrode - 30 grains

3 1/4 Dr. Eq. 1 1/4 oz. ‘Pigeon’ load:
Infallible - 24 grains
Ballistite - 26 grains
DuPont Bulk Smokeless - 39 1/2 grains