Mudcat Café message #2152653

The Mudcat Café ^TM
Thread #104870 Message #2152653
Posted By: GUEST,T.Total
19-Sep-07 - 10:41 AM
Thread Name: BS: Yet Another Alcohol Related Tragedy
Subject: RE: BS: Yet Another Alcohol Related Tragedy

What's the difference in describing something as "80 Proof" and something as "40% alcohol by volume"? And when something is "45% alcohol by volume", what Proof does that make it?