That shotgun comes standard with a changeable modified, 'Rem Choke' tube; and, for the record, it's a frigg 'in cannon! I've used shotguns like this to, 'pass shoot' high flying geese at 60 to 70 yards!
I don't know, 'Why' you're interested in shooting so far with it; but two things you could do in order to, 'reach out there 'n touch someone' would be to purchase a couple of spare choke tubes: One in cylinder bore, and the other one in full choke.
You could, then, use the (rifled) cylinder choke to fire Brenneke rifled slugs which, conceivably, you could hit man or deer sized targets with all the way out to 90 to 100 yards. With 3 1/2 inch shells and a full choke there ain't any other shotgun I know of that's going to reach out farther and fire, 'high brass': #4, #2, or buckshot loads farther than that cannon you've got there.