Modern Warfare 2, on PS3. Using an Intervention, which is a bolt action sniper rifle.
No camping involved ^.^ Only quick scopes and Hard scopes, rushing :D
2 of my teammates had Chopper Gunners, and they still didn't get as far as me, and that's when I lol'd xD. And I got 1 harrier, and 2 predator missiles.
Best sniping experience I have ever had.