I suppose if this was a result of pure boredom than I understand the experiment. That said, with the abundance of Range Brass in most popular calibers (actually made of Brass) I see no real or practical reason to do this. Aluminum will just not tolerate the constant stretching and resizing as Brass will. Yes, I suppose you could get away with it once or maybe twice but again.... what's the point when Ranges are loaded with real Brass in almost all popular calibers.

ANY Range that won't allow a shooter to retrieve his own Brass is one that I would never shoot at! To me that practice is just plain wrong!