Stan,
If no one has done it, I expect they will, now that you have asked the question. The rim question should be simple enough to answer (someone try it) and if an issue, simple enough to address (a simple lath job). I use 444 Marlin cases to make 2 1/2" 410 cases , but the 444 case is simi-rimmed rather than rimmed. As far as case capacity is concerned, someone will have to fireform some cases and measure them, fireforming will increase the diameter but will make them even shorter (they are not quite 3")
Mike.