There are several bourbons out there that are called "Single Barrel" with the implication that they come from one barrel from somewhere in the warehouse. I wonder if this is really true. I think one standard bourbon barrel contains about 200 standard 750 ml bottles. So, is 200 bottles all that is in any single "Single Barrel" batch? It seems unlikely to me. That would mean that each 200 barrel batch would have a slightly different taste and a slightly different proof.
Any one have any thoughts or insight?