I got around to counting little holes in cardboard this weekend. It held 120 (~70%) & 126 (~74%) pellets out of ~170 (1 oz #5's) in a 30" circle at 30yds.
I felt pretty good about this, so I broke out the clay bird thrower. I only broke 4/8. I was pulling the string myself, but that usually doesn't affect me too bad and I don't feel like I was distracted by the hammers (I don't really recall seeing them at all). It was getting cold, so I'll go with that and the relatively tight patterns as why I went 50%.
I'm going to load up some 7's tonight and see how they do. Maybe I just need more pieces of lead in the air...