Learned something new from interview of Bryan Litz on Gavintube.
https://www.youtube.com/watch?v=O0JUvYKKhy4
A bit more in depth here https://precisionrifleblog.com/2019/06/0...ag-models/
https://www.youtube.com/watch?v=O0JUvYKKhy4
A bit more in depth here https://precisionrifleblog.com/2019/06/0...ag-models/

