my oldest boy has done well with an Indian Creek .555 with HS mag blends and the hevi 5s & 6's. it shot a tighter pattern than the tight wad and undertaker we tried.
he's killed 2 birds in the last couple years, one at about 10 yards with the #5s and last years was 39.5 yds per rangefinder with the mag blend.
my youngest is next, both have 500 20 bantams so we'll be seeing what his prefers soon enough.
going to start with the more open ones and go from there, and try the IC .555 in his to see if it likes it.
if so, that's probably what we'll stick with. simpler to have them set up the same, I hope it works out that we can......now if I could just get him to sit still out there we'd have it going on, lol.