For comparison
7/8 oz. at 1160 fps in my 8 pound Smith = 12.7 ft/lbs of free recoil
1 1/8 oz. at 1150 in Stan's 9# MX = 16.7 ft/lbs
1 1/8 oz. at 1200 fps in a 10 pound trap gun = 16.2 ft/lbs
1 1/4 oz. 3 1/4 Dr. Eq. (1220 fps) in an 8# gun = 25 ft/lbs
1 1/4 oz. 3 3/4 Dr. Eq. (1330 fps) in an 8# gun = 29 ft/lbs
1 5/8 oz. 4 Dr. Eq. (1280 fps) in a 9# gun = 40 ft/lbs
There is an interesting collection of live action Live Bird and Inanimate Target (mostly 2 shots allowed) shooting here. The Live Bird loads were likely 1 1/4 oz. 3 1/4 Dr. Eq. and the reaction of the shooter and gun to recoil is clearly shown; many had their heads well off of the stock for the second shot
http://www.trapshooters.com/threads/vintage-live-action-trap-and-live-bird-shooting.514889/Not trying to go OT, but the live action videos are a nice way to compare grips and the shooter's response to recoil for the second target
