Oh, it's very true.

"I am a very good shot," Watson says, firmly, "and yet somehow the bullet ended up in the wall behind me, and rather closer to a dear friend of mine than I would like." His expression is grim; he still thinks about that moment more than he would like. "A message, I suppose. I hadn't really expected to do much damage to the Captain in the first place, not by that point, but that still wasn't quite what I expected."