Exactly right unless you know some one that hand loads the unmentionables and might have some proper size gas checks.So if I have this right in my head.....
The powder, a wad, then the #9 shot, then over that another wad with some glue or fingernail polish to keep the wad from allowing the shot to spill out when the pistol is holstered?
I assume all that to get loaded and packed down with the rammer before adding the glue or nail polish?
In the testing I did not use glue but I have used finger nail polish to glue the bullet in a Hahn paper tube for my Sharps carbine. That makes a very durable attachment and should work in a revolver and clean up with fingernail polish remover.
OK now it is your turn to test so go fer it!