From the distiller:
I'm a long-time home brewer and the head distiller at Balcones Distillery here in Texas . Hope this is cool to do this on the forum, but I wanted to make it known that we a greater than normal quantity of recently dumped 20 liter whiskey barrels available for sale. With this summer being as hot as it's been, I'd hate to see them dry out waiting for homes. These are great barrels for homebrewers not only because of their size, but because they come pretty much sterile and were leak free when they were dumped. Because they're used, you don't have to worry about over-oaking your beer like you would with a new barrel.