Are you saying there is variability between 5 gallon (US) carboys? If
so, that's my experience too. Most of mine end up working out to
~25.5 bottles of wine which is about right; 25.23 750 ml bottles is
where they should end up. I have some that end up over 26. They are
not precision made, so it's not really unexpected to me. (Some take
a number 6 stopper, others a 7.5...) I started marking mine when I
bottle so I know which ones are which. Most of mine came out of the
same manufacturer in Mexico and are less than 10 years old, but I have
a few that are really old too. I'm pretty sure I have none that come
out to less than 25 bottles.
Regards,
Joe

(Dr. Richard E. Hawkins) wrote in message >...
> I now happily own a half-dozen 5 gallon carboys.
>
> Or I thought it was happily.
>
> I racked a batch into one of these to store for a few months, expecting
> two and a partial bottles to be left over.
>
> Nope.
>
> *four* full bottles after filling to the neck.
>
> Yikes.
>
> hawk