maturing bourbon

How Many Ounces In A Barrel Of Whiskey? Name US customary units Imperial units Gill (Imp.) 5.0 imp fl oz Tumbler (UK) 6.39 US fl oz 6.6 imp. oz. Tumbler (US) 8 US fl oz8.33 imp. oz Whiskey Barrel 53 US gallons 44 Imp. gallons How many 750ml are in a barrel of whiskey? Instead,