There are side mount scope brackets specifically made to fit the Win 94 (your gun) that attach by the factory drilled holes on the port side of the receiver. They are poor at best, and the time I tried one on my old 94 the empty cases would, often as not, drop back into the open action. As others have suggested, I would leave this rifle in its (very nice) original configuration and pick up an old Marlin 336 for scoping in 30-30. The Marlins are side eject, have a drilled and tapped flat top receiver for scoping, and are an all around better rifle than the Winchester IMO.