What proof is the 2014 William Larue Weller?
The 2014 William Larue Weller is bottled at 140.2 proof, or 70.1% alcohol by volume. It is the wheated bourbon of the Buffalo Trace Antique Collection, bottled uncut and unfiltered at its natural barrel strength, so that figure is fixed for the whole release rather than varying bottle to bottle.
Is the 2014 William Larue Weller the highest-proof release in the series?
Yes. At 140.2 proof the 2014 William Larue Weller is the strongest bottling Buffalo Trace has released under that label since the barrel-proof series began in 2005, and nothing between 2015 and 2025 has come near it. The next highest is the 2013 release at 136.2 proof. Buffalo Trace called it the strongest Weller release ever when it announced the 2014 Antique Collection.
How much of the 2014 William Larue Weller was lost to evaporation?
The 2014 William Larue Weller lost 62.3% of its original whiskey to evaporation over 12 years and 3 months in Warehouses D, K and L. That loss is what concentrated the remaining liquid to 140.2 proof, the highest strength in the William Larue Weller series.