I should have been more specific. I intend to start with a 10 percent wash, I will be double distilling and putting it into the barrel at 120 proof. Vendome suggests that a 500 gallon batch at 8 percent starting abv will yield 33 cases of 12 750ml bottles per batch. I have read Bill Owens' book Craft of Whiskey distilling and unless it is a typo he says 1000 gallons of wash yields two barrels. I just want the right info for my business plan.
Seth