Well I finally bought my first shotgun today and I'm having a couple issues with it. It is a Remington 870 express magnum with 28" barrel. First off the shells will not always come out of the tube, all of which are 2 and 3/4" shells. Federal shells will not come out of the tube at all, and the second issue is that it will only hold two shells? Don't these things hold at least three shells? Is there a plug or something inside the tube that I need to remove? I bought it at a pawnshop so I don't know the history of the gun but the bore is in very good shape, and it doesn't look to me as if its been fired much at all. The action is in good shape too from what I can tell. I really don't know much at all about shotguns so you all will have to be patient with me. Thanks in advance!