Hi Mike, thanks for the welcome on the forum, the sxs is Stamped Mayfield Nitro on the barrels, it is a 12 gauge, I have included the link to photobucket with pictures of it and the water table with the markings, I have not done this with pictures before so please let me know if I am doing it correctly and if not how to post pictures here on the forum, thanks very much for any help you can offer or anyone else, jim
http://s1299.photobucket.com/user/plato134/library/?sort=3&page=1#