On the Knob Creek site, it says the following:
By law, bourbon must be aged in a new charred oak container (barrel) and cannot be entered into storage at higher than 125 proof.
If that's the case, then how does Booker's wind up at 126+? Does the alcohol get stronger as it ages?
BTW, I'm glad a I found this site. For a fan of all whiskey's, this is awesome for bourbon's!