http://en.wikipedia.org/wiki/Simo_Häyhä
Häyhä was born in the municipality of Rautjärvi near the present-day border of Finland and Russia, and started his military service in 1925. Before entering combat, Häyhä was a farmer and a hunter. His farmhouse was reportedly full of trophies for marksmanship.[3] It was during the Winter War (1939–1940), between Finland and the Soviet Union, that he began his duty as a sniper and fought for the Finnish Army against the Red Army.
In temperatures between −20 and −40 degrees Celsius (−4 and −40 degrees Fahrenheit), dressed completely in white camouflage, Häyhä was credited with 505 confirmed kills of Soviet soldiers,[2][4] and 542 if including the unconfirmed deaths.[4] The unofficial Finnish frontline figure from the battlefield of Kollaa places the number of Häyhä's sniper kills over 800.[5] A daily account of the kills at Kollaa was conducted for the Finnish snipers. Besides his sniper kills, Häyhä was also credited with over two hundred kills with a Suomi KP/-31 submachine gun, thus bringing his credited kills to at least 705.[4] Remarkably, all of Häyhä's kills were accomplished in fewer than 100 days.
Häyhä used a Finnish variant, M/28, of the Soviet Mosin-Nagant rifle
...
Now I've got to get my own Finnish Mosin to match his.