ya know, you can get a Remington 870 in 3-1/2" for a relativly low price, Because what will happen when you get your first turkey or even worse mis your first turkey you are going to want to go right out and buy a new big 3-1/2" mag. You can always shoot 3" mag. out of a 870 super mag. but not shoot a 3-1/2" mag out of a standard 870. You only feel the recoil when your sighting in the gun and god willing, you only have to do that once.
Good luck!!!