Just an example.
Quote: Throughout the rest of this discussion,
bear in mind the fact that not all cartridges will require a crimp of any kind. For those cartridges which can be loaded without resorting to a crimp, we recommend omitting this step altogether.
http://exteriorballistics.com/reloadbasics/crimp.cfm
... and to be fair. The article covers taking out the flare on a straight case as crimping.
