I've swaged 1000's of 223 cases with an RCBS kit, but not all in one sitting
While it does a great job, I still like to cut a slight chamfer to ease primer seating as I've crushed a few primers trying to seat them w/o chamfering.
The worst part of running milserp brass is when you pick up some more at the range, toss all your empties in the tumbler and then don't know which pockets are swaged and which need to be swaged.