I haven't been in Dick's many times, but from my experience, it seems aptly named.
For the OP, don't you have any gun shops around? Check pawn shops, too. You don't usually find the good deals at gun shows anymore, but you can still find some great deals at pawn shops. Start looking at all your pawn shops and look for a good rifle in bad shape. A Rem 700, Win 70, whatever, if it's in somewhat rough shape, be assured the pawn shop paid no more than half of what it's marked for. Negotiate hard, and get a rifle that will almost always shoot better than it looks and you can practice your gunsmithing skills. Redo the stock, learn to cold blue, or even learn to rust blue the metal, glass bed it, your call. If you get too nice of a rifle, you might be hesitant to tear into it.
That's also the beauty of Mosins. Just don't get one that's been arsenal refinished and you've got a shooter, or a project, or both...whatever you want to make of it.
RT