Yes, exactly what I was thinking. And fingers are squishier than tunnels.
From your link:
Given the nose-shape of the train pictured, I find it easy to imagine the type of “ride” those female passengers were picturing. And cheering. ;)

Sorry, just caught this as I was on vacation (hunting and shooting, ironically).
Here’s a Houston Chronicle update on one of the Colorado Canyon shootings. Tough read, woman watched them kill her husband.
Two anecdotes, not about people though.
I was reading a book about the Boer War and there was a story on a boer guide with the Britsh forces who went out hunting one day with a rifle and came back with a brace of ducks that had no bullet holes in them. He claimed that by aiming at the point where the swimming ducks touched the water, the shockwave from the bullet (.303 or 7mm/8mm presumably) transmitted through the water was enough to kill the ducks through internal injuries. No idea if thats true or not.
Out on the farm I shot at one of a pair of rabbits sitting close together at about 80 yards with a .223. When I went to pick it up I found two dead rabbits, one with no head & one with no injuries at all that I could see (we skun it for the dogs so I had a chance to examine it).
The only thing I can think of is that the bullet passed close enough to the second rabbits’ head to kill it via shock. 
Collection of articles about the Colorado and San Vicente Canyon shootings. Russ’s experience is in the 4/1 article.
I had a rabbit that had a heart attack the first time it ever saw a proper garden, so it’d hardly surprise me if one had a heart attack if it was chomping grass with its pal and then next second his grass-chomping buddy’s head was exploding. It probably didn’t even hear the bang from the gun before it died.
Fair enough. I’ve never had a rabbit as a pet but I would have thought non-domesticated ones would be hardier.
Wild rabbits are near enough designed to be fearful of everything, so if they can be scared enough into standing motionless, I’m sure if you ramped that fear up a little, you could easily get them to have a fatal heart attack. Should you be that way inclined. 
I wonder if the shirt can disrupt the shock wave enough to be a confounding factor that would prevent any razor burn.