Some years ago, a gunsmith built a one-of-a-kind "survival weapon" based on an N-frame (I think). I'm going on a decades-old memory here, so maybe someone can correct me. It had a a ring of .22 chambers, a ring of centerfire magnum chambers (I think .357?), and a shotgun cartridge chamber. It had a long barrel and a detachable stock and required a transfer stamp and license. It was written up in one of the major gun mags (G&A?) in the 70's.