I used patternmasters for years, started with the original PM before they came out with other models, back when i had my 1187 supermag. Before this year it was an extended long range patternmaster in my SBE. I now use a Terror 655 in this SBE, the president of surecycle told me to shoot 3 shot and smaller, so I used Fed premium 4 shot and heavy high velocity 3 shot all season for ducks and geese, along with some snows this spring.
Tight is right, for me, whether I'm shooting the birds at 5 feet or a third shot at 40 yards, I absolutely love tight patterns. I shoot very well with this combo which is what matters, and it is a crushing duck combo, worked well on snows, however not being able to use bigger shot brings 35+ yard canada shots into "questionable" territory. So, I am looking into the 675 Terror, which I believe is still tighter than most x full waterfowl chokes you'll find out there, while still allowing me to shoot some BBB if I feel the need.
Most people associate guys who use tight chokes with someone who shoots birds at long distances, that doesn't have to be the case, it isn't for me, I'm a caller, I pride myself on finishing birds, toes touching ground, five feet away from me, and a day of finishing birds at 30 yards isn't a success for me, I just shoot well and enjoy less cripples with a good tight pattern.
I also shot trap in my college's club with this 655 and shot better than I ever had before.