[Brian Pfleuger]

Oh, one thing the feeler gauges are good for is to take up the slack between the case and the shellholder. If you can't get the sizing you need for whatever reason (it would mostly mean you had a very short chamber or a defective die) you can slide a gauge under the case in the shellholder so it it held tight as high as it can sit. There's usually at least 0.015 available there.