I wouldn't worry about it, I"d buy some powerball tickets instead, your odds are far better.
If you have eye pro on, it isn't, really. The incident I was involved in was 100 times worse- the bullet actually launched straight up off the floor and penetrated a thin foam ceiling tile, although it bounced off the floor above without even leaving so much as a scratch on the wood. We found the bullet lying on top of the ceiling tile next to it.
ETA: A bigger likely danger is a piece of sharp flying brass shrapnel getting embedded in your skin if the case itself explodes, looks like that one didn't.
-Mike