"Correct him how marksman...?"
the first guy to shoot at 1000 has not set himself up to shoot consistently straight and does not load the bipod before he shoots Stix
this guy explains it better than l ever could, better setup/position = better precision
it is harder in the field sometimes but get this right and you are 2/3rd's of the way there
https://www.youtube.com/watch?v=iLeJ8rRUSXcif you watch the first guy at 1000 in Bills vid as he shoots the rifle jumps all over the place, what you want for precision is a smooth rearward push
to load up the bipod you put enough forward pressure on the bipod with your shoulder that you can let the rifle go and it will not fall off your shoulder, you do not want the legs dragging backward like this guy has happening when taking the shot
l cant find it at the moment but "mark and sam" videos have the technique you want and mark shows in slowmo how it should look
these are things IMHO everyone should know about and practice often before they start shooting animals at longer range
its all part of it and its what works for me
good question Stix
“If you do not read the newspapers you are uninformed. If you do read the newspapers you are misinformed”. Mark Twain