.30-06 FN neck crimps

All, I know it’s not a major thing but in recently bought a couple API rounds, FN 55, and I noticed after coming home that one neck is typical and the other has a hexagon (6 sided) crimp. I’ve noticed the hexagon crimp on other FN rounds. Are these different factories?

I would guess since they have the same headstamp the one with the double crimps is just a mistake that went through twice, oriented differently.

Interesting… thanks!!