Hmmm ... another movie depicting sniper versus sniper based on true story of Battle for Stalingrad is "Enemy at the Gates" and Soviet sniper Vasily Zaytsev.
"..Vasily Grigoryevich Zaytsev was a Soviet sniper and a Hero of the Soviet Union during World War II. Between 10 November and 17 December 1942, during the Battle of Stalingrad, he killed 225 soldiers and officers of the Wehrmacht and other Axis armies, including 11 enemy snipers.[1]
Prior to 10 November, he killed 32 Axis soldiers with the standard-issue Mosin–Nagant rifle (effective range of 900 metres or 985 yards).[1] Between October 1942 and January 1943, Zaytsev made an estimated 400 kills, some at distances of more than 1,000 metres (1,100 yd)"
