Re: the 1 1/16 oz @ 1400 fps loads

Calculated recoil for a 7.5# gun with 1 oz. @ 1400 fps is 23.4 ft/lbs of free recoil

1 1/8 oz. at 1200 fps, (3 Dram) 7.5 pound shotgun = 23.0 ft/lbs

From Smokeless Shotgun Powders: Their Development, Composition and Ballistic Characteristics by Wallace H Coxe; E.I. du Pont de Nemours & Co., 1927, a DuPont Oval Pamphlet, p.20. 1 1/4 oz. 3 3/4 Dr. Eq. (1330 fps) Super - X Field (introduced 1922) with DuPont Oval pressure was 10,640 psi
Calculated free recoil in a 7.5 gun is 31 ft/lbs

https://sites.google.com/a/damascusknowledge.com/www/home