Extreme long range shooting from Downunder

Got no personal interest in this, other than watching their video's and being amazed at the shots they keep on pulling off, so mainly just posting as an interest piece.
2 person team (shooter and spotter) from Perth here downunder that keep on pushing the limits, last year they pulled off a 4300+ yard shot against a 24 inch plate and now trying to push it up beyond the 5000 yard mark.

4300+ shot
https://youtu.be/9NEO2BO7uqU

And their latest attempt at 5000+ yards.
https://youtu.be/6k24Uu5NN5o

Apologies for the second link, can only hotlink one video it seems.