I've hit targets at 1000yrds (with a gpmg....)
I have watched 2 kangaroos bound across a classification range at less than 300 yards with 10 GPMGs (M60's) firing and watched the fall of the tracers to see the 10 gunners attempt to take out the 2 'roos. All missed and the 2 'roos kept going. I have also done the 1000 yard shoots with a .308 target rifle with open (peep) sights (OMark 44 - shooting the same rounds as the M60) to score 95+ consistently.
The M60 can kill at greater ranges than 1000 yards but the chance of getting hit is pretty slim... mind you if someone is shooting at me with a gpmg you can bet I will be keeping my head down (and that is the purpose of the gpmg...).
A beer for the sniper at the centre of this story.