I'm running two Vincis -- one's a 24" and the other's a 28." They aren't the 3.5" super, but I doubt there'd be a ton of difference.
I know firsthand that many shotguns are individualistic when it comes to turkey chokes. That's not the case with my Vincis. They shoot like two peas on a pod. I've also found they don't mind a dirty barrel. In fact, the first pattern after a good cleaning is generally not stellar. I just pull a boresnake thru between shots and keep shooting. They simply aren't very temperamental.
I mainly run two Jeb's chokes -- a .660" and a .665". The tighter choke does very well with Hevi-13 #6 shot. It'll put 140+ in the 10" ring when the weather's cool and patterns are really thick in warm weather.
The .665" is my primary choke. It throws a remarkably wide even pattern with Hevi-13 #7s thru a wide range of temps. While I can squeeze more in the 10" ring with tighter chokes, the effective width of patterns with that shot/choke combination is 18-20" at 40yd. Conversely, that choke throws remarkably tight patterns with Hevi-13 #5s. I've posted a couple of patterns with both chokes in the patterning section.
I've also had great success with a Rhino .660" -- very tight with both Hevi-13 #6s and #7s. Again, I've posted some representative patterns in patterning section with this choke too.
