[GingisK]

This means that a 9mm bullet (.355) actually expands to .5325 ,larger than 45 ACP.

You must be assuming that you get no expansion from .45. I can assure you that there is .45 ammo that expands quite a lot, way bigger than 9mm.

[ontap]

Get it here!!
http://www.firequest.com/devistator-ammo.html