I shoot at this time three old Damascus SxS 10ga guns. Drew gave some good advice, but many of those loads are out dated because the powders listed aren't available anymore. If you take any mild 12ga load it will have even less pressure in the 10 because there's more surface area for the pressures to exert on - the chamber is bigger. There is Red Dot, Unique, Clays, the list goes on for mild 12ga loads with 1 1/8oz of shot. Just sub in the 10ga wad and go for it. A lot of the guys on the Parker web site like 19.8grs of RD and 1 1/8oz of shot. My favorite 10ga 1oz load for clays in my 1882 Remington is 19grs of RD or 22grs of GD. A couple of 16ga filler wads in the SP-10 Rem 10ga wad brings the stack height up for a good crimp. And it doesn't matter what hull you're using, they're all straight walled. A friend picks up 10ga hulls at a public range and gives them to me. Fed, Win, or Rem - I load em all the same. They all go bang and break birds just fine. Good luck.
Last edited by Paul Harm; 01/13/20 03:36 PM.