i have a mossberg 500 that i am going to be using for duck and late goose season. my buddies and i went and patterned our guns and i have a much more open pattern than they do. right now i have an improved cylinder mossberg choke(not accu-steel). i am shooting 2's and bb's. i have a full for steel (4 and 6) choke. i haven't had a chance to pattern that full choke and am not sure if i should, will it damage the gun? the package just says its best patterned with 4 and 6's and doesn't give any warning against bigger shot. i would like to shoot the full to help bring down those big geese. what do you think?