There are genuine reasons as to why a primary producer might have a licence to use firearms on their property. Firearms are one of the necessary farming tools of trade that allow farmers to humanely destroy domestic livestock, and manage browsing wildlife or feral animals.
The management of nocturnal wildlife can involve the use of a vehicle and spotlight, often late into the night. Noise from the firearm can travel significant distances, giving the impression that the activity is closer than it actually is. However, no one can discharge a firearm closer than 250 meters to a dwelling without the permission of the person occupying that dwelling.
There are strict rules around the ownership and use of firearms, which must be stored and used responsibly by licenced operators so as to ensure the safety of operators and the general public.
Refer here for more information https://fas.police.tas.gov.au/obtaining-a-licence/application-process/