sort of relevant; a few games ago I saw someone play a vsr firing in the mid 300fps range and using only iron sights. He played it in very much the same style as the pistol players- run duck hide then wait. After he shot he would displace, run hide and wait again. He was amazing to watch and I got him on lots of the video. Although almost every one of his opponents had AEGs he was still able to rack up just as many kills by changing the tactics to suit his weapons strengths and limitations.
From what I have seen most 'sniper' players dont do that, they expect first person shooter sniping where they camp and bang away at targets. Rather than adapt the style of play they keep upping the fps and wondering why they cant score kills at super long ranges...