Yes, it depends on the rounds. Solid point rounds can go through cleanly sometimes. They are good for target practice. Hollow point rounds come apart and expand once they hit, making a gaping, enlargening would.
That meaning of didactic is hilarious. At this academic anon's workplace, medical and nursing courses are divided into didactic (book learning in classroom) and clinical (hands on in hospital or clinic). This means that clinical courses are non-didactice and therefore "unenlightening, uninformative, … " Hilarious.