PS, For years I have role crimped 38 Specials and let them drop out the bottom of the machine in the last station. It's a great system, and very fast. Unfortunately, a combination of events lead me to change over to using a taper crimp in the last station.
First, Star went out of business, and I switched to using Remington HBWC. Remingtons work great, but they are oversized leading to a kinda fat cartridge. None-the-less, they still work ok in my Clark until I followed up a squib and buldged the barrel. $450 later I had a new barrel and bushing installed by Clark, and the new barrel has a much tighter chamber. The only way I could get the cartridges to fully seat was to taper crimp them.
I could have switched to another bullet, but I have had such good performance with the Remingtons (better than Star HBWC) so I didn't want to change.