That's quite excessive leakage, Dan.

The suggestion from TomS will stop pretty much any leak that comes from
between the staves, but if it's leaking through the stave, a little
more aggressive action is required. Wedging pieces of wood into the
leak is a general fix. Mind you, this only works for "through the
stave" leaks.

With all that said, I'd call the person who you bought it from. A well
coopered barrel will not leak at all. For point of reference, I fill
my barrels with wine without *any* presoaking, and have never seen
anything more than a slight ooze that stops within a day.

clyde