As mentioned, the Remington 1100 has a large faithful and satisfied following, Beretta 400 is great but more money, their older models like the 390, 391 should also be considered. And as mentioned, a sporting clays model or even a field gun will be more versatile and are easier to find. Any decent gun will work but these two brands have a well earned track record of providing years of service through tens of thousands of rounds. If recoil reduction is your goal, the gas operated guns are the way to go. The BT 99 of course is not an autoloader like you are looking for, it is a very rugged single shot trap gun that is made for trap singles and handicap, it excels at these but is pretty well useless for anything else.