I did blacksmithing prior to blue diamond cultural armor, and have been trying to find trivials for banded that were more accurate. Banded went higher than it is in game. I have been searching, and here is the only guide I found. Back then I think fine plate would almost take you to limit, but I cannot remember. I only maxed out banded at 175, and was farming for padded leather for the fine plate when the trivials changed.
Here is the only link I found so far, but I might have some old tradeskill guides I printed out in a box in the basement from back in 2001, before the trivials changed.
Brahma's Blacksmith'n Guide
Haynar