I am new to duck hunting. In fact only been one time now and what I would like to know is what would you veterans suggest for leading the birds. I went yesterday morning and did not hit one bird. I am shooting a Beneli Nova and was shooting 3 inch #4 shot. I just wonder if I was leading too much or not enough. I was leading about a foot from the bird at a range of about 40 yard I guess. Any tips or suggestions would be appreciated.