I said it backwards anyway. 120 precent would be 240 proof.
I guess it's mathematically possible to be more than 100% this is how wiki says you find alcohol by volume.
Given a value in ABW (alcohol by weight) you can convert it easily to ABV using the following formula:
ABV = 1.25 × ABW
or, inversely:
ABW = 0.8 × ABV
I was just looking around and I saw up to 300 proof.
To Mikey, listen to Pete Seeger, folk genious and, then post in my thread because no one else has.
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