Ryan, 1 1/8 ounce load out of a 10ga is a great load for both clays and some game. Whatever published data for loading the 2 7/8" 10ga that I could find is in the short 10 spread sheet that is on this site. Your desired combination of Cheddite hull, Ballistic Products wad, and Red Dot is an unpublished load meaning there is no available data for pressure and velocity. Same is true when using a Federal hull. What I can tell you is the combination of Federal hull (2 7/8), SP10 wad, 1/2" filler wad, 1 1/8 shot and 19 grains of Red Dot shoots very well, it's pleasant to shoot and works great. I don't believe 19 grains of Red Dot and 1 1/8 ounce of lead in any combination would stress or ever hurt a 10ga. Just understand it's a wildcat load, but take some comfort that others here are shooting it without issue.
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