You don't really need the 3.5 inch shell. If you get them close then 3" will work. I shot alot of 2 3/4" shells last year.
That said, look at the Stoeger 2000 semi auto. You can pick up a black synthetic for a little over $300. Uses the Benelli SBE Inertia System. Also rumor has it Beretta barrel and Franchi stocks. If you go pump look at an 870. Novas are worthless in my humble opinion. Little bro has one and they rattle like hell.
That said, look at the Stoeger 2000 semi auto. You can pick up a black synthetic for a little over $300. Uses the Benelli SBE Inertia System. Also rumor has it Beretta barrel and Franchi stocks. If you go pump look at an 870. Novas are worthless in my humble opinion. Little bro has one and they rattle like hell.