As time goes by, more and more errors are found in ALL technical books, these include both Stratton & Skennerton, as new information comes to light with the ever increasing release of time-locked documentation, old 'well known' facts are shown to be incorrect.
This is why such as Skennerton need to release updated issues of their books, correcting previous errors (information 'correct' at the time) and adding new additional information.
Possibly one of the biggest internet myths, now corrected, is the fact that Ishapore used 'superior / better steel for their production of the 2A / 2A1 rifles'. They didn't.