Broken Barrel Reserve Oak Bourbon: Rum & Rye FinishABV: 57. 5% About the Product: This series of unique bourbons are available by the barrel only, and dumped, finished specifically for the individual customer. Each batch varies, and each retailers store pick of a Reserve Oak Series whiskey will be different than the next. Our programs are offered only at full proof 57. 5% ABV so that not a drop of flavor is lost. These whiskeys are some of the best value in their price range for a Kentucky Bourbon