Board Thread:Questions and Answers/@comment-25923658-20141226045353

I'm looking for a comic book where the following happened:

Superman is in a tank of water and the water level is rising. At the top of the tank is a machine gun that is firing bullets across the top of the tank, so if Superman reaches the top he'll die (he must have lost his powers). Superman pulls together the bullets at the bottom of the tank and uses them to stop the gun so he can escape.

Has anyone heard of this comic? I believe it was published somewhere between 1960-1970, but I'm not sure if it was Action Comics or Superman or what... Thank you! 