i think carlos hathcock used a similar righ to bag a viet cong at about 2500 yards



GySgt. Calos Hathcock was credited with
93 confirmed kills while serving in Vietnam
Un-Officially, his body count exceeds 300
GySgt. Hathcock made a confirmed shot that
all snipers talk about to this day, a shot that most experts
would say is impossible




At approx. 2500 yards, with a .50 caliber M2 machine gun
and with a Unerti scope mounted on it,
GySgt. Hathcock took out the target with one shot
In simple terms, the distance was 1.42 miles
...
Carlos Hathcock - Wikipedia, the free encyclopedia