You did not mention the yardage but on short yardages, I have seen them, come back. The last time I experience this was when a fella next to me was shooting his .40 at a swinger. Don't know what they call them but it was a man's outline with a metal insert/internal swinger. When you hit the vital swinger, you knew it was a good hit. I started feeling something hitting my pant leg and the ground in front and to the side of me. Not once, but enough that I called it to there attention. Those that hit my leg, didn't have much steam. ..
Now then, I have seen warnings on some swingers that gave a minimum distance on placement from the shooter. ...
Be Safe !!!