Get a turkey choke as johnch advised. The factory choke tubes are absolutely going to shoot worse than about any good turkey tube you can buy. I doubt that you have to use steel shot for turkeys. I've never heard of the requirement in any other state. Steel shot doesn't have the impact to kill turkeys at extended ranges. As far as the minimum number of hits in the kill zone for a good pattern, my personal benchmark is about 20 hits on a turkey head/neck target with 5 hits in the brain/spine.