I'm a clothie and the highest damage from a single shot I took was 471 while doing My Enemy's Friend.
those suspenders.... i must have them!
I'm not sure what's happened in the most recent patch, but these guys are exhibiting rather strange behaviour (for a hunter) at the time of posting this.
The behaviour I noticed is that they are holding guns before I agro them, but once I engage them in combat they swap the gun for an axe, then run up and wail on me with that. I wouldn't have noticed except they kept hitting me with improved wing clip, then standing there and beating me with an axe. Maybe Blizz broke them in 3.0.8a?
These appear to be the only mobs that Alliance can get the inscription drop off of. All the other mobs it drop from are alliance-friendly.
These NPC's work kind of like the upcoming new Alliance race, the Worgen.. when their health is at 40% they change into a Worgen form.
They turn into worgens when you are fighting with them.