Pretty sure it was a 9mm Kel-Tec. Probably hollow point. Nothing about it in the autopsy?
Autopsy didn't go into great detail about the bullet. Just that it didn't exit the body and and the jacket had broke into three parts (if I remember correctly)
Unless Zimmerman hit bone I would think it would have exited the body as Martin was was wearing a sweatshirt and was pretty thin. 115gr JHP sound pretty standard but was hoping for manufacturer, etc. I should just feel lucky we know what we do!