Roper, I now remember a few of those team members' sights that didn't have enough windage to allow that much correction. We had a few on the team who didn't quite understand the realities of 30 mph cross winds on a rifle range near the ocean.
That 1st place 3374-211v and 4th place 3332-183v scores are the difference between a 1.2 MOA rifle and ammo and a 1.8 MOA rifle and ammo between those two teams. Our coaches were as good as the Aussies and maybe a bit better in reading the wind. But we had too many shots far off call to make some of the wind changes exact.
I rode around Sydney that year with David Tubb and his Dad, George a time or two. Known 'em and shot with 'em both since the 1960's.