I have a Winchester 1300 black shadow I bought used. I've tried 2 different choke tubes and at 25 yards, the pattern is about 12 inches low. I had a Remington 870 that would blow holes at 20 yards and hit where I aimed but it was the 3.5 and I got rid of it for weight reduction as I only shoot 3" loads. I am about to rid myself of this gun if I can't find a fix. I can hold 12 inches high and it hits center. I have tried several sizes and brands of 3" turkeyloads and the pattern is always low. Any help would be greatlyappricated. Don