I've just posted the following to the "Great Traveller Clean-up" thread but wanted to cross-post it to its own thread to ensure others see it.
Just noticed something that seems to be an omission. Central Supply Catalogue, page 8, left column, first paragraph states "...the defensive sandcaster reaches its probable pinnacle at TL 16 with a 'sand' cloud which can..deflect charged particle beams."
As far as I could see, this effect is mentioned nowhere in Core Rulebook, Book 2: High Guard, nor in Adventure 3: Trillion Credit Squadron. Not that there are many TL 16 ships floating around outside the Darrian-controlled areas but it should at least be mentioned in High Guard, which describes weapon improvement effects received at higher TLs.