Green Dot does produce a very tight pattern in light loads. Also, I don't care for Green Dot pushing one ounce loads. But, for handicap, I really like Green Dot.
Mike- You asked at what yardage one should go to a heaver handicap load ? Honestly, I do not know. I would suggest changing to a heavier load and 7.5 shot around the 24 yard line. That is sort of a standard answer but I have no firm data to support it. I use a full three dram load of Green Dot and 7.5 shot from the 27. But, I have practiced with my lighter 16 yard load from the 27 and it shoot better than I can shoot. I shoot a lot of new AA Super Handicap Silver Bullets from the 27. I am convinced that the three dram red 7.5 AA shells will work just fine. But, when I walk into the store and the heavy silver shells are the same price as the 3 dram red shells, I can't resist buying the silver ones. More, at the same price seems better.
Many shooters, including me, often shoot a shell that is heaver than we need. Many shooters shoot excellent long range handicap scores with a popular imported shell that is marked 3 dram. But, when the shells are tested, they come out to be a light 2 3/4 dram shell. These shooters will often say that their heavy handicap shell does not kick any more than their light singles shell. I know why.
Pat Ireland