What goes around...
comes around. And people have been rediscovering the .308 and 30/06 and 7mm Mauser and ...
The U.S. Army was using the 30/06 one hundred years ago, and the .308 in military form some fifty years ago. And they remember the 7mm Mauser carried by their Spanish adversaries, nearly 115 years ago, in the Spanish-American War.
Some things do get lost over the years. Some people don't quite live that long.