The expected election of the first Shooters, Fishers and Farmers MP to the NSW Parliament's lower house has sparked uproar, with education minister Adrian Piccoli feigning shooting members of the opposition front bench to make a point.

In extraordinary scenes, Mr Piccoli began yelling "Bang, bang, bang!" while pointing at Labor MPs. "You don't get out of it that easily!" he yelled. "That's the Shooters party!".

Shooters, Fishers and Farmers candidate Philip Donato has been expected to claim victory in Orange following Saturday's byelection which saw a record 34 per cent swing against the Nationals on the primary vote.

However, the byelection result was plunged into uncertainty on Thursday night following a recount involving a misplaced bundle of votes.