I'm mostly ok with recreational purposes (hunting/skeet/target practice), sure. Keep them locked up at the facilities that provide for that, turn them in when you're done, woo.

As to Heller, I think it's a ridiculous and poorly reasoned decision, driven by a determination to make the right to bear arms a personal rather than a militia based right, which there is no textual and minimal historical support for. Given that, I find it hard to guess what limits the Court is going to place on that right.