In another forum Ken Weber wrote:
That started me thinking about the task of weighing such large quantities of grain and the possible, inadvertent affect on the mashbill if errors in measurement were to occur.The equipment you refer to appear to be grain hoppers. After the grain has been milled, it is weighed in these hoppers prior to being dumped into the cookers. If a recipe consists of 74% corn, that may equate to 3,250#. Next the rye is weighed out and cooked
Suppose the corn is measured on one scale and the rye on another. One day an alert worker notices that the level of grain in the rye hopper appears higher than usual even though the indicated weight is whatever is customary. Some time passes before he thinks to mention it to anyone. By that time several batches have been cooked, distilled and barreled.
A certified metrologist is brought in, and she determines that the scale is off by some percentage, which in turn has effectively altered the mashbill by some smaller percentage.
Has such a scenario ever occurred? Has the bourbon been bottled and sold even though it's a bit heavier with rye than usual? Would such an event be a non-event due to the normal mixing and mingling, and the skill of the master distiller?