1 ton of grapes = about 150 gallons of homemade wine (winery presses recover slightly more juice than home winemaking presses can!)

SO to make 5 finished gallons of homemade wine you need about 75 lbs of grapes

AND to make enough finished wine to fill a used 60 gal barrel you will need 1000 lbs of grapes (this should give you enough wine to cope with racking losses)

1 case = 12 750 ml bottles = 9 L / 3.785 L/gal = 2.3775 gal per case

SO a 5 gal demi-john will give you about 2 cases (24 bottles)

AND bottling a 60 gal barrel will provide about 25 cases (300 bottles)

1 Merlot or Cabernet cluster weighs, on average, about 1/3 lb

SO a full picking lug of grapes, which normally holds about 35 lbs of fruit, would contain about 100 clusters

AND, since one ton of grapes contains about 57 lugs or 5700 grape clusters AND one ton makes about 150 gals, 1 cluster provides .026 gallons WHICH MEANS that there are about 8 clusters of grapes in each 750 bottle of wine!