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


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

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