I fired a few rounds of .460 S&W w/o hearing protection once while hunting...my left ear rang for 7 friggin months. Then one day it just stopped.
I guess the nerve ending (hair?) either died, or it healed. They used to think hearing damage was permanent, but they discovered about a decade or so ago that it actually can heal.
Either way, never...ever...ever...again...ever!!
To kill something as great as a duck just to smell the gunpowder is a crime against nature. - Alan Liere
Democracy is a device that ensures we shall be governed no better than we deserve. - George Bernard Shaw