I've played hardcore my whole life. While getting high HSKR with sniper rifles isn't necessarily suspicious, the following battle reports are:
http://battlelog.battlefield.com/bf4/battlereport/show/1/1108498679740463872/255853617/
http://battlelog.battlefield.com/bf4/battlereport/show/1/1108440804234047936/255853617/
http://battlelog.battlefield.com/bf4/battlereport/show/1/1107756067156789824/255853617/
http://battlelog.battlefield.com/bf4/battlereport/show/1/1107710924839971072/255853617/
http://battlelog.battlefield.com/bf4/battlereport/show/1/1107312626232785216/255853617/
In order for your appeal to proceed you will be given 72h to record a full game from the beginning where you can obtain 45%+ HSKR with any of the weapons listed on those battle reports.
Minimum resolution: 720p
Minimum time: 15-20 mins.
Buddy, just whip out a camera or cell phone and record your screen as you play.
Alllllllllllrighty then.
Appeal denied.