No advantage for 3" chambers. The max load allowed is 1 1/4 oz. shot, (and largest shot size allowed is 7 1/2).

IMO patterns are extremely important in this game. Pigeons are much more difficult to down than one would expect. They are very tough and require a well centered hit to down in the ring. It is common to see a bird hit twice, with what appear to be good hits, especially straightaways, and just get faster.

The frequently winning shots are very, very good. That said, there is a lot of luck in the "draw". That is, sometimes the best shots will get birds that are next to unkillable, and an average guy may get some easy birds and win some money. One easy bird can make all the difference.

May God bless America and those who defend her.