I'm going to SD for the pheasant opener. I'm considering taking a 16ga Fox Sterlingworth (Utica) and have some concerns about using heavy pheasants loads. These range between 1-1/8 & 1-1/4oz. of shot and around 1300 fps. velocity. The is a very late (1938-40) production gun with 2-3/4" chambers. Should I be concerned?