Question: is 40 proof moonshine strong?
Answer: Is 40 Proof Moonshine Strong?? To power a car, moonshine—in this case, illicit homemade whiskey—must have an extremely high alcohol content, at minimum 150 proof (or 75 percent alcohol by volume), or 190 proof for best results. During the Prohibition, moonshine could be as weak as 63 proof and as strong as 190 proof.