Go shoot some clay targets, try out your Full choke if you never have. Do you hunt fields? timber? A lot of people change chokes for what situation they will be in. Timber- Closer shots, maybe use Improved or modified (bigger spray of pellets) Fields- Longer shots, Try out a Full, or an extended choke like the Pattern Master.
Sorry if I was just rambling, but i tried to make some kind of sense...
Jake