Call me cynical but one of the early adopters of the metric system was the liquor trade. A common bottle size was a 'fifth', one fifth of a US gallon, which is 25.6 US ounces or 757 ml. The bottle quickly became 750 ml.
Trivial, unless you're bottling booze and those extra 7 mls add up to a 'free' bottle for every 107.
I don't drink beer but afaik a bottle of beer is still 12 US ounces or 355 ml. It's haphazard. I'm looking at a bottle of flavored water that is 17 oz or 503 ml both of which are odd numbers.