Oh great, another one of these pointless threads. Tell me friend, what is the point of having a 600 FPS sniper rifle? I play airsoft to have fun, not for the sake of hurting people.
Maybe that is be fun for him eh, if we all liked the same things this world would pretty god damn dull, roger? We use 550-600 FPS Aegs, semi only on the regular in UT. I personaly shoot one of these rifles and shoot and move just as much as someone with 350FPS. You just have to know your distances and fight accordingly. Also, I carry a pistol should I need to see the whites of their eyes when i kill them.
Dont hate just cause you dont have the fortitude to take a round from a high power rifle, or because you dont have the resources to have one yourself. As for "what if they get too close" do what we do, kick them out and dont allow them to play, this goes for any rule set for a game that is broken. If you cant trust someone not to break an engagement distance, how can you trust them to call a hit?