One thing I do enjoy about commercial 223Rem brass, as compared to military-esque 5.56, is the generous chamfers afforded to it. Especially the Remington Peters, nice wide curved chamfer.
Easy hand priming, with no binding or snapping that may jostle a primer upside down or sideways.
In my experience, the RCBS pocket swage is not ideal. It may swage the path clear, but there is no realistic way to get it far enough into a pocket to chamfer the stake crimps over.
Believe me, I’ve tried. A lot. It will be stuck when you hit the curve. And the press will have to be pounded to get it back off the pin.
That kills my Zen.
I, too, grabbed a counter sink and cut the remaining edge catchers off in order to have smoother, trouble free priming.
Then an epiphany! Why not just buy commercial brass and not mess a whit with it?
Well, because it’s just setting there being wasted! Just lying in the dirt, discarded, maybe even lonely! That’s why!
So with all the extra I do to my finer target brass, Lapua gets my money, saves time in all sorts of ways.
Then I chamfer the rest and run it through an AR again!