Tony, that is a magnificent repair!

"but anyway Black powder loads with Round Ball as a light load?"

My by far best 10-bore load is a really strange one. My Tolley roundball gun has uneven groove depths and about .003" of choke in the last 3 or so inches of the barrels. I was getting a lot of gas blow by and velocity spread because it seemed no ball diameter would work well and I didn't want to go too big with the choke and laminate barrels. I finally tried a .100"card over the powder (120gn swiss 3F), a 3/8" felt wad lubed on the edges over that, ANOTHER .100" card, then a fiber wad and lube under the ball in a roll crimped plastic case. The cards seemed to sandwich the felt wad to seal the deeper grooves and they shows zero signs of blow by, the holes usually touch at 50 and they are right at Tolley's advertised 1330fps (5 dram 2 5/8"gun). Best of luck and please keep us posted how she shoots.