Hiho Max
How about a tighter IC ...kinda like slightly more improved Cylinder :)(is that skeet 2?)& IM?
I don't get to nutted about chokes....to be honest I couldn't tell you the exact chokes on my two vintage guns....I've shot them for impact point..but not actual choke constriction/pellet count...they are some where in the mid constriction range it seems.
I started with a Beretta OU & was constantly sweating the right tubes for each S/C station....much more relaxed now with whatever the fixed ones are
good luck
franc