Small Base Dies - Am I Right or Wrong?

[L. Cooper]

One problem with running the cases through a die without the expander ball is that resizing dies squeeze down the case neck until it is a little too small and then stretch it out with the expander ball to the correct dimensions. You may end up with case necks of too small diameter.

If you already have a set of dies, try them. This whole "problem" may just go away. If you have functioning problems, then try the small base dies.