I understood that it was Bertram brass used in the 'new' Kynoch cartridge range but their website says that "All new tolling (sic) has been produced to draw cases from military specification brass stock to the original 'KYNOCH' drawings and dimensions, but with modern Boxer primers".

Of course this could still mean that it is the Bertram tooling and process and not necessarily Kynoch's own. They have "standardised" on Woodleigh bullets for their ammunition.