Best Sniper

http://www.businessinsider.com/five-of-the-best-snipers-of-all-time-2017-5
https://www.telegraph.co.uk/news/uknews/defence/11383552/British-Royal-Marine-is-worlds-deadliest-sniper.html
https://en.wikipedia.org/wiki/White_Guard_(Finland)
http://nordic.businessinsider.com/the-incredible-life-of-simo-hayha-the-worlds-deadliest-sniper-who-killed-hundreds-during-the-winter-war-2017-3/
https://www.historyextra.com/period/the-worlds-deadliest-sniper-simo-hayha/
https://www.casematepublishing.co.uk/index.php/the-white-sniper-simo-h-yh.html
http://listverse.com/2009/11/13/top-10-snipers-in-history/