Larry, Thanks. I've only used shot sizes from #8 to #6 on WC. They all work fine. A single #6 or #7.5 seems 100% reliable, so I guess we shouldn't be surprised at the effectiveness of a decent #9 or #8.5 pattern. After a couple of years fooling with #6 (well, I had to see for myself) I've decided they're too much, unless I manage to place just one pellet on the bird. Possibly #8.5s are "optimal"?
I haven't had the guts to try #8.5s on grouse yet. I've had such good luck with the 3" .410s in #7.5 that I'm loathe to change anything.
As for clays, I think #8.5s are the best thing going for 90% of NSCA subgauge targets.
Sam
