600 CITES tags are issued for problem crocs that kill live stock etc every year the lobby is looking to take 25 from this quota. Safari hunting of the porosus crocodile in Australia has been blocked twice at the federal level already, largley because of the relationship that Steve Irwin had with the Howard Government, hopefully things will be different this time but with Peter Garret having the last say on this issue I dont think it will get up. It is a shame as the crocs will be destroyed anyway and we will miss out on a ton of revenue that could be raised if they allowed us to hunt them.
The Porosus croc is an CITES Apendix II listed animal and cannot be exported from Australia or into another CITES compliant country without cites tags. They are also a protected species ander Australian Law so shooting them is not allowed without a Parks and Wildlife permit.
I think the minimum caliber they are considering is .375 after the client takes a shooting test for accuracy and the animals will have to be shot on dry land(mud bank etc) with the guide ready to take a back shot with the gun shouldered when the client fires.