That is one long damned shot

The shooting — which took place while Harrison’s colleagues came under attack — was at such extreme range that the 8.59mm bullets took almost three seconds to reach their target after leaving the barrel of the rifle at almost three times the speed of sound.

The distance to Harrison’s two targets was measured by a GPS system at 8,120ft, or 1.54 miles. The previous record for a sniper kill is 7,972ft, set by a Canadian soldier who shot dead an Al-Qaeda gunman in March 2002.
.338 Lapua Magnum, definitely a 'reach out and touch someone' cartridge in a good rifle.