I'm waiting on my sights to be delivered for my Winchester model 1300. Once their in, I'm going to begin patterning my gun. After much deliberation and research, I want to try the Hevi-13's in either #5 or #6 shot. I'll probably buy a few cheaper brands to test as well to see how they pattern with my gun. What are your guys thoughts and experiences with shells that work well in your guns?