Been watching a lot of stuff related to the PRS and long range stuff over the last while, these ones kind of sum up the picture of what i have seen so far.
This one is about some of the tech being worked on with rangefinders and where they are and where they are going, one fella is the boss of the electronics dept at Leupold, draws a picture on what is what in the tech.
https://www.youtube.com/watch?v=z93mIRsRtX0&t=107s
This one is about the Sig 2400abs rangefinder, it is probably the most tech oriented out there, along with the kestrel 5700 with ABS on it. ABS is from Bryan Litz at Applied Ballistics.
https://www.youtube.com/watch?v=4Ujgbq-Th_Q
This one is a bit of discussion by a couple of guys at Gunsite, Q&A so to speak;
https://www.youtube.com/watch?v=WXBxrgbtPzU
Thought these two were well done also, long range instruction on wind and its effects;
https://www.youtube.com/watch?v=f2KHBpVHrLg
https://www.youtube.com/watch?v=CsGIAwY5WXg