There is no limit in the Act on the numbers you can register and we have been assured that the registry in not interested in how many you have. You can register as many firearms of the same make, calibre, type, etc., as you wish. We have been assured there is no limit as long as you state proper reason and need. You can state the same reason and need for any number of firearms. You can state as many reasons and needs as you like for any one firearm.
Registration is for life or until a firearm is disposed of.
This means you register each firearm only once. You do not have to re-register your firearms when your licence is renewed. There is no need to pay to have your firearms inspected. Your very best bet for identifying is any official of any shooting club. The Firearms Safety Awareness Council Ltd. is a company, not a Government body.