I don't camp I pick off people and move, like a sniper should. M98 with a 12x and straightpull bolt. With the 12x on this gun at 500 meters the bullet will hit the first line down into the scope, 6-700 meters, and it'll hit at about half way down to the second line, and 800 and past that is 2 lines down or more. If you can figure out how to lead targets right, you can be ridiculously effective as a sniper in this game. Using the "spot button" about every 5 seconds on a different spot of the map totally helps too. lol
Bottom line, is that some people play different, someone might like to get all close with an assault rifle or other gun, and others might prefer to reach out and touch someone with a well placed headshot from accross a map. lol
Oh and I'm sure everyone knows those MAV trolls, I don't do that shit. Watching someones head pop is more my style. lol