Thread: Police called out for Duck shooting

Interested in opinions on this and where/what it will lead to and if some proactive actions should be taken now or wait for letter to arrive and deal with then depending on what letter says.
Some quick facts around incident.
DOC ground encompassing riverbed (DOC Game bird Permit for area held and shown to Police)
Firearms license valid (Valid and viewed by Police)
Duck shooting license valid.
Firearm locked in case and opened for inspection by request for Police. Ammunition stored correctly.
This is rural environment, maybe total 5 farm houses within 3kms
Been shooting this area for 5yrs no issues until now.
Police... 3 cars...6 officers at exit gate from riverbed. Complaint about unsafe shooting, pellets have hit farm house roof.
Conclusion of interview at gateway, have been told will be getting written letter for "firing a weapon in unsafe direction"
Here is the interesting bit, I believe the complaint is false and is more likely a noise complaint or local not wanting it shot. (do shoot a limit here 5 or 6 times per season)
Why? There is only 1 houses within 1.5km and it is 736mts away.
From the research I have done it appears steel 4 shot is incapable of traveling that far.
When fired at a 40 degree elevation (apparently max range is achieved at 40 not 45) testing in England and America both say maximum with tail wind 350mts so that does not not even get 1/2 way to the closest house.