I trim all my 223 brass every time, so the expander ball doesn't bother me in regards to stretch. I use a F/L die in the first station to decap and partially resize the case, then have the trimmer further along, and a Hornady F/L die raised up in the last station to smooth the neck out and expand slightly. For the way I process brass, this works well. It all goes to stainless tumbler after this process, then I sort out LC brass, FC brass, Winchester brass, and anneal them. The rest becomes blasting ammo.