It sounded like they did.
A lot of bullet wounds just aren't that bad. A low power round firing a solid bullet could miss blood vessels, major nerves, joints and bone and just pass through cleanly. A sharply tapered spitzer style solid can essentially part muscle as it passes through without doing much damage at all.
Unless something important is hit with a round carrying some power, the average round just isn't that good at doing damage. Even with good hits with duty rounds, some people take their time when it comes to lying down, being quiet and behaving.