Why is the 8 bore illegal for waterfowl/migratory game?

[charlie cleveland]

well ray ive been doing some more shooting...have not beat the 16 pellets with the 8 ga yet..tried my best browning pump gun wich is a 3 inch gun shot a no 6 lead 3 inch winchester supreme load at 70 steps at the same 8 1/2 inch paper plate only 16 pellets in it....got the ithaca 10 ga magnum out used a hevi shot load of 1 3/4 ounce of no 6 and it put 36 pellets in the paper plate at the same 70 steps. this old ithaca has a fixed full choke...found some of the shells you are using in 10 ga it should bring up the number count ...the payload in them was 2.4 ounce in no 4 5 6 and 7 size shot at 1350 fps.. and they like them shells too these things cost to much to shoot much... i shot several 3 inch and 3 1/2 inch 12ga just reguler loads at the 70 step target but results were very poor... ray what will your gun do with just a ordinary 3 1/2 inch shell say a no 6 2 ounce or 2 1/4 ounce shell...i know choke is important but i think the reason we get good results is because of these new shells.... charlie