I tried 7/8oz #7.5 and #8 in 20ga O/U last year with good success but I think I'll go back to using a 12 try out my new SX3 12ga using 1.125oz #7.5 shot. I don't like using #6 or #9s but I can't really tell much difference between #7.5 and 8s. I might try some #7 steel just for kicks but I have a feeling they will might prove disappointing. Anyone use anything more exotic? There's really no need to but why should that prevent us from doing it anyway?