Just spoke with the Commissioner. It IS 100% LEGAL to shoot from one unit into another unit, as long as no other rules are broken. No shooting across roads, structures, and so on. I'm not going to list his name (so a million people don't call him), but all of the commissioners are aware of it. So he said call your local commissioner if you don't believe some crazy guy on Coues Whitetail. It IS LEGAL.