handicap trap browning 725 choke invector ds

I have a 725 Sporting 32" barrel. I've read several different threads about how Browning factory Invector DS Extended chokes seem to provide a more "open" pattern than do other chokes. I use a full choke with 7.5 shot at 1 ⅛ oz. for handicap shooting. I'm currently at the 24 yard line. I...