How many bottles of wine?

One bottle of wine = 750 ml or 1/5 of a gallon

One Barrel = 60 gallons – 25 cases or 300 750 ml bottles

One Ton of Grapes = approximately 700 bottles of wine

One Acre of Vineyards – Low yield for high quality wines = 2-4 tons

One Acre of Vineyards – High yield for less expensive wines = 10 tons

Reference: http://www.winecountrygetaways.com/wine-barrel.html