I have watched pretty much all of LoneWolfUSMC's videos as well as the Road to Precision vids and the videos in the OP, all excellent btw. But I can honestly say that if you want to learn about long range shooting, Sniper 101 videos would be my first recommendation. I was skeptical at first especially seeing the word "sniper" in the title, but the amount of information your presented with is almost overwhelming.
Calibre selection, bullet selection, rifle selection (bolt and semi), harmonics (rigidity), scope selection (including MIL/MOA explanation), and trigger selection have all been covered in amazing detail so far, and i'm only on part 16 of 39. If you decide to watch make sure you pay very close attention because a lot of technical terms and info is discussed. It's basically physics class for gun enthusiasts.