deerslayer15, you have alot of questions here, but I'll try to boil them down for you. You don't need to sell your Maverick just to hunt turkeys. Just because the barrel is marked modified doesn't mean it will throw a modified pattern with all loads. The "modified" choke you have may or may not be enough for turkeys, but it will pattern tighter with harder shot, such as hevi-shot or good hard turkey loads. Here is what I do with a gun, when I want to see if I can kill turkeys with it. Get some good heavy copper plated turkey loads, from #4-#6 shot. I like # 5 myself. Then get or make some turkey head and neck targets. Put them up, and start shooting. Back up 5 yards and shoot again. Keep backing up and shooting until you can't kill the paper turkey any more. Now you know the Max range for your gun. And if you really need it, you can buy a Mossberg barrel threaded for choke tubes alot cheaper than what it will cost you to trade up.
