Youtube …Sniper 101 by Thesaurus Rex…I know weird name he has. His one shot hits at extreme long distance is pretty amazing. That is his goal on every shot.
I am impressed on the amount of time this guy Rex has put into this series of videos. Every thing one wanted to know about long range shooting from caliber selection to scopes to ballistic charts. He has well over 80 videos breaking everything down. Very extensive. 