RE: Flight Control
I've not seen anyone pattern (at our local range), the Flight Control better the Remington Hevi's. By comparison, the Winchester Xtended range, (also Hevi-shot), has been besting the Remington Hevi's. As said, all guns are different, but the results I've viewed are as stated.
Spatrat is getting a super good pattern with his lead ammo, especially for #5's. I'd be very satisfied with his pattern as long as his pellet count was brain / spine hits and not just within the turkey outline. #5 shot has plenty of energy to get the job done out at the longer ranges.
I've found that the Winchester Xtended range ammo shoots exceptionally well. Since it is Hevi-shot, I chose the #6 shot, which gives me more pellets downrange with the impact energy of about #4 lead. It's a bit more $ out of pocket, but I'm not throwing them at doves either. Well worth the piece of mind for me when faced with that 40 - 45 yard hung up gobbler.