FWIW, I have no problem with anyone taking their .556 Tyranosaurus Special, if that's what you want to shoot. My objection is to guides and/or outfitters insisting that you must bring at least a .300 Magnum of some sort, especially if you don't have a .300 Magnum (or something larger) in your gun safe that you shoot regularly. A nilgai hunter should be free to bring whatever rifle he has that he has confidence in and can shoot well.
