Re: He didn't have specific intent to photograph the property
That's proven by the fact that Meredith had time to retrieve his shotgun and shoot it down after he saw it.
How do we know he had to go and retrieve his shotgun? He is an American yokel FFS. And anyway, had he seen the drone flying in the general area he could have got the gun ready and waited for it to come within range.
However, having shot trap down the line before, even with a long choked down barrel and heavy shot, 80 metres is a bit of a stretch.