Decided to experiment with my 20 ga. during the off season.  Yesterday I bought a Carlson's .568 Longbeard Choke and 2 boxes of Winchester Longbeard 3'' # 6 shot.  Shooting a Benelli Nova 24".  Anybody here have any experience with this combo?  Have not shot any yet but plan to in the near future.  I was just wondering how others made out and any opinions good, bad or indifferent.  Thank you in advance for any input on the subject.