I thought that shot was with the .416, not the .338 Lapua?
The 2,430 meter Shot (2,657 yd, or 1.51 miles), accomplished by Master Corporal Rob Furlong, a sniper from Newfoundland, Canada, in March 2002 during the war in Afghanistan. Furlong made this record-breaking kill while he was participating in Operation Anaconda. He was a member of the 3rd Battalion Princess Patricia's Canadian Light Infantry (PPCLI). To make the kill, he used a .50 caliber BMG (12.7 mm) McMillan TAC-50 bolt-action rifle
the Aussie one I don't have have any more details than that