At the Redding website when using a bushing die they tell you to to use a bushing .002 smaller than necessary. And then let the expander expand the neck .002 on any unturned neck.
What I'm getting at is Redding is telling you to size the neck .004 smaller than bullet diameter and then expand it .002.
You have no control on how much your neck expands when fired and your only real choice is how much smaller than bullet diameter you size the neck.
Below is a .223 die chart from the Mass Reloading link, and shows how much different dies work the case neck. What is amusing is I get almost the same results with my standard and small base RCBS .223 dies.
I do not think a standard full length die is the end of the world and in over 47 years of reloading I can't remember having a split neck problem with standard dies. Meaning too much of what benchrest shooters do filters down to the average shooter that its not needed.
You have to separate what competitive shooters do and the average hunter who reloads needs to do.
As a side note CatShooter knows more about reloading than I do, "BUT' I'm better looking.