Found this pic in another forum - just the opposite of what happened in the post above. 9mm into a .40S&W after malfunction clearance drills during a training session.
Same color (Blazer) ammo, got it mixed in a Sig P229. According to the poster, it was *click* no bang *tap-rack* BOOM! The 9mm casing made a good hit on the target at least....
And no one was hurt in the incident, save for pride