I posted this awhile back.
"After proofing my gun, I started from 70grs ffGOEX and shot groups to 110grs, than ran I out of ffGOEX. I switched to fffGOEX and I did a little more proofing. I settled on a load of 110grs fffGOEX. The load is safe in my gun but might not be in yours! I am shooting a .690RB, which is a little small for the gun. Reading other posts, I think it would shoot better with a .715.
I am using two patches, a .022 & .013; moose snot, to make up for the smaller diameter RB. The gun will shoot 1” to 2 ½”groups at 50yds, that is a two shot string of the left and right bbl”¦.they are regulated very well. I shot the load over a chronograph and it was averaging 1,126fps. I managed to hit a metal rod that holds up the sky screen with a patch and it bent it like a pretzel. I am VERY pleased with the accuracy. The .690RB’s weigh appx: 494grs PL. I believe that the .715’s RB PL would weigh around 550grs, but I'm not sure."
Keep me posted
Harpy