The only instance I can recall was when the spotlighter shot the unfortunate camper who was brushing their teeth and wearing a headlight.
Doesn't stop me from being concerned when I'm out in them thar hills though esp. in the roar.
Back in the 70's or very early in the 80's in Western Southland a meat hunter shot a Tuatapere based Forest Ranger. I'm pretty sure the Ranger wasn't hunting but may have been timber cruising. Who knows the details?
friend of mine was shot at in nelson lakes, never saw the hunter. he yelled out to identify himself and the hunter kept silent.. not sure if he was on a track.
i've been in the tararuas with hunters walking up and down the track actively hunting....
I'm not sure how much of it has happened outside of hunting (though certainly close calls with trampers), but we had a thread a few years back titled 'mates shooting strangers'. http://tramper.nz/?view=topic&id=1828