I took the Barton / 1792 / Tom Moore tour during the sampler. I learned:
-Bourbon has to be between 51% and 80% corn. If over 80%, then it's corn whiskey, not bourbon.
-Bourbon (with no mention of the word Straight) has to be aged a min. of 2 years
I did learn that BT is aging Weller barrels at Barton.