Hmm. 450ish knot low (10') pass over the rotor with 5g on did the trick. He thought that the tail rotor had failed and ended up in a ball on the side of the hill over which he was knapp-of-the-earthing. Number 2 was A109A fitted with guns and rockets. He tried to run for the hills and took some 30mm HE in the fuel tank. I agree that if he had started squirting back at me I would have been more circumspect. Would never have been able to go into a bar ever again if he had got me! Number 3 was landed-on and de-planing rapidly when he took my last 30mm round in the tail pylon.
The BIG mistake these guys made was to fly over an inlet at V low level and I spotted the snail-trail from 8000'. Amazingly, no one died!