Kent tungsten matrix #3 or #5. Remington HD #4 or #5. Hevi-Shot GOOSE (the other stuff is lighter) in B. Mostly 3" with a few 2-3/4" Kent shells. Remington Modell 1100 Magnum. Sometimes I will shoot a Wingmaster Magnum, just because I'm in the mood.
I do not shoot steel anymore. I always hated it, and I can afford not to, so I don't. Especially not the Black Cloud or the Blind Side. For over 100 years, rounder was better, but now it seems physics has changed ? I'm not buying it. I think it has something more to do with being cheaper to make than round. That, and marketing hype.