Seems I have heard that in International Trap; when they "went to 7/8 ounce loads;" scores went UP! I don't know if it's because of reduced recoil, or what.
Some 20+ years ago, I went from 1 1/8 ounce loads to 1 ounce, and for me, I really couldn't tell any difference.(No, I am NOT a world champion.)
My best round at sporting clays has been with 7/8 ounce.
Can I tell you why?.......no. But I'll keep shooting them until someone smarter than me tells me why I shouldn't.

Sam Ogle