I was taught quick Kill at Ft Polk in ‘67 I showed my sons ...I tell people we used BB guns in the army and they just roll their eye’s...
You need to send them that first link in my #5, and tell them to quit rolling their eyes.
I was at The Land that God Forgot, Fort Ord, 2/68. My memory isn’t that good any more, but I think we were using M14’s or carbines. Could be wrong.