Jill,
A shot it about an ounce or, frequently and ounce and a half. So
60 one ounce shots would be five 12 oz beers. Most bars do allow people
to drink that much. That is one beer every 12 minutes. Keep it up for
more than an hour and your bound for hang-over land, but most bars
won't bat an eye when serving people at this rate. Given that you are
drinking 60 different beers, you would average out to an average
alcohol content, which would be close to 4.5% - 5% by weight. Some
imports seem higher, but some of those measure by volume, which results
in an apparently larger percentage of alcohol, but this is due to the
difference in measement.

Dean G.