I was given a 1 liter charred oak barrel by a friend in my homebrew club. I was thinking of starting out with some bourbon in the barrel but am having a hard time deciding what.

Has anyone tried this?

What would you start with?

I originally thought of putting something simple in like Maker's Mark to see what differences would occur with some extra age in a barrel. Then I thought maybe instead I would get a bottom shelf brand and see if it gets any better with additional age. Then I thought maybe some "white dog" they sell would be a nice experiment to develop my own private bourbon. I assume the time in the barrel would be less due to greater contact area for such a small sample.

Any ideas or suggestions?