Most .223 brass which is "crimped" will look to have another ring inside the primer pocket. If I had not just finished chamferring all my .223 I would post you a picture.
Take two and hold them with the pockets up. If one looks to be slightly beveled on the edge leading into the pocket and then drops down into the pocket, and the other one looks to have a bright shiny ring inside the pocket, the one with the ring is "crimped" and you will need to chamfer (bevel) the edge to allow the new primer to slide into the pocket without flipping over or going sideways.
You can buy the expensive swaging tool, or you can go and buy a 1/2" bevel tool for around $12 and put it into a drill, preferably battery operated, and gently bevel (chamfer) the pockets.
The purists will be along shortly to tell you how to do it "right", but many of us will tell you it can be done and work just as well without the expensive gizmo's.