Hmmmm at the moment all I've got in a 10 gauge is my grandfathers old hammerless WC Scott . Which at the moment happens to be my number one dove/skeet and buckshot gun !

I've been using a 1 1/4 ounce load that Ross Setfried had in Handloader maybe 8 years ago using 30 grains of SR7625 and a SP-10 wad with a 16 gauge filler in the bottom and a 10 gauge card wad on top to keep the floded crimp flat .

I also had a friend give me his 10 gauge Sporting Clays load that used 1 1/2 ounces of shot . But I've not tried this one yet .

Had been giving seriouse consideration to dropping to 1 1/8 or even 1 ounce if I could find a load I liked .

Might just manipulate your 1 ounce charge in my Remington and Federal hulls and use more cards in the shotcup of my SP-10 wads !

I've made up 1 to 1-1/8 oz loads for my hammer 10ga doing just that. Just use the 1-1/4oz load data but put in more cards and less shot and keep the powder the same. Can't imagine getting into trouble doing that. Worked fine for me.