Raich will be used to render Montana/Utah's attempts to make in-state weapons and ammo out of reach of the feds to be nothing but grandstanding. CA tried to make in-state pot legal, and that is not accepted by the Feds. There is a case on the books of a fellow with a homemade machine gun, probably never left his house, and he was convicted (upheld too) on federal charges.
One would think so. It wouldn't surprise me, on the other hand, to see the a conservative majority twist around its pretzel logic to reach a desired political end. They went one way on Lopez, and another way on Raich, for what I believe to be political reasons. No matter the outcome, we will remain at the whim of an unaccountable, all-powerful judiciary limited only by its own imagination and creativity.