The result of your conversion between Dram and barrel [UK, wine] appears here
To convert between Dram and Barrel [UK, Wine] you have to do the following:
First divide ((0.000016387064*231)/128)/8 / 0.00454609*31.5 = 0.00002581
Then multiply the amount of Dram you want to convert to Barrel [UK, Wine], use the chart below to guide you.
Symbol: dr
No description
Symbol: bbl
No description