Just an idea but why not have your local gunsmith to tune the trigger up,and buy a cantilever fully rifled barrel for your 500? With the money you save,you can get a good quality scope that you would have never been able to afford after buying another gun. Also you'll have money left over to buy several different kinds of slugs-even premium slugs to see which is most accurate from YOUR slug gun. There's bunches of barrels and accs available to fit your present gun.