Green’s Dictionary of Slang

1. to bushrange.

1906

Gadfly (Adelaide) 2 May 9/3: Gipsy Smith was a second-rate bushranger, who Ned-Kellied on a small scale about Bendigo [AND].

2. to kill a bird or any other game unsportingly.

1951

S.H. Edwards Shooting and Bushcraft 48: You will have ample time to plan your shot, whether you plan to ‘Ned Kelly’ them or take them on the wing [AND].