I would have to concur on the observations posted by those above. The first couple of weeks we generally see closer flushes and some birds holding tight- especially in thick cover ( creek bottoms/ cattails etc.) I like a IC/Mod for rough shooting. On the " pushes" thru cover, I think tighter chokes are a better choice for the blockers because of the longer shots at those birds flying out to the sides. I think the 21 will be fine and I have had great success with a 16 , but feel a little inadequate with a 20 as I feel I need to pass on those shots I would take with a 12.
BTW the gent with the camo benelli uses a gnats ass wad wizard choke and can plain fold birds all day long at ranges I don't even think about. There's a place for everything!
# 6 is ok for the closer shots, but I have more confidence in #5s and always shove one in the tighter barrel - FWIWs .. Alot of big country out there - so get in shape !!
Good luck to all!
best regards,
JBP
