"efficiency and tight engineering take second seat to keeping costs down in manufacturing"

That's what sucks about all manufacturing. Nothing is done for the consumer. It is all for the profit. Some people just don't get that. Once upon a time though...

Anyways, yeah we understand the whole FPE thing and it is best measured over the entire shooting distance. That starts with muzzle velocity. Then you can start calculating FPE at every meter of travel. Because that is where the caliber matters regardless of the FPE.