This doesn't lend much encouragement . . . .
Quote from GRT site
I just wanted to reach out and let you know that my husband Gordon passed away on January 19th 2022.
Until further notice, this site stays online. Please note that Patreon contributions have been paused.
Initially, no additional submissions should be made to the GRTLab, or Translations, as no one has access to service the data.
Therefore, it will be impossible to update Powder Models, Calibers, and Bullet to the GRT database as an official release until the possibilities of continuing Gordon's fine work are explored.