turkeystalker,
If you are a right handed shooter it is your left ear that gets more of the muzzle blast. Left handed shooters, it is the right ear that gets more noise and damage. I see it all the time in hunters here when I test them. The ear opposite of the hand they shoot is always slightly worse in the hi frequencies, 3000-6000Hz. It makes sense if you think about how your ears are orientated as you shoot in relation to the muzzle of the gun, which is where the noise comes from.