i remember shooting clay and being pretty accurate in hitting the clays but in the real world, when i went dove hunting i can't seem to hit nothing, or if i do they just keep flying away. very few have fallen and too many shots taken. we've been using the winchester x-pert 2-3/4 6-7 steel shot. i was reading and thinking, could it be the choke? my 870 came with a modified choke. do i need a full choke? what is the difference? which one will give me a further shot?