The result of your conversion between cup [US] and barrel [US, dry] appears here
To convert between Cup [US] and Barrel [US, Dry] you have to do the following:
First divide (0.000016387064 * 231)/16 / (0.000016387064)*7056 = 0.00204613
Then multiply the amount of Cup [US] you want to convert to Barrel [US, Dry], use the chart below to guide you.
Symbol: c
No description
Symbol: bbl
No description