I have discussed this need with a number of barrel brokers (we also use barrel brokers to sell some of our whiskey casks).
The biggest issues I've had with using them is not knowing 1. the source and 2. how long they have been empty. Eliminating the brokers ensures we get fresh casks from...
I'm Gene Nassif, co-founder of Obtainium, an American independent bottler.
I'm looking for bulk casks for finishing and aging various spirits (rum, brandy, whiskey, etc)
Thank you in advance!