I purchased a new 30gal french oak barrel in Dec. When I filled it with water, it sealed very quickly and only leaked around a couple quarts before entirely sealing. I topped it off and left it for 2 weeks, then conditioned and sterilized it with a sodium bisulfite/citric solution. All this happened in my garage which is ~55-60F. I had no problems with any leaking from the barrel, which was in sharp contrast with the new american oak barrel I replaced it with (under warranty from my local wine-making supply shop).
As I do not have good temperature control in the garage, I moved the barrel into a quiet spot in my house and filled it with my merlot. Aside from slightly overfilling to the bottom of the bung, I have had no trouble with drips. Now that I have red wine in the barrel, I can clearly see where it is seeping between the staves. No real problems however, except at the very end of the barrel where I am seeing a small seeping occurring between a few stave-ends. It is mostly just moistening the end of the barrel staves and has only dripped 5ml or so. This only happened a week or so after transferring the wine.
My question is whether this is an unexpected breaking in of the barrel? It had been sealed tight with water at 10F cooler temp. Thanks in advance.
Cheers.
-Greg