Yep that's a football field length for us Yanks, that's a good ways away for a hit job. I seriously doubt that's exact though because how are you going to spot someone's face and look and realize that dude is there to kill you when he's 100 yards away? Shit we make those shots killing deer all the time and it's not exactly the easiest shot to make on a person much less a deer and a moving person at that as it said he starting moving back towards the gym