How many bottles in a cask?
This depends on a number of factors such as maturation rate, age of the whisky, etc. On a very approximate basis, you should assume that a hogshead (250 bulk litres), bottled at 43% alc. vol., in 70cl bottles, after 10 years, would yield 375 bottles, a barrel (200 bulk litres) would yield 300 bottles and a puncheon or butt(500 bulk litres) 750 bottles.