By me about 6 years ago... can't remember why I was clearing the SR9c, but I was post-call and came home from running errands and hella tired. Second floor bedroom with windows open and screens down. Reversed steps and dropped the magazine then racked the slide. Pull the trigger and well, my left ear has had a ringing in it ever since. Went through the window screen, over the front porch roof, across the street, and into the neighbors front side yard. Tried and never did recover the HST round. Kept the casing on my dresser as a reminder until we moved. Wife was none to happy, but relieved that neither me nor anyone else had an extra hole.
