One competitor in a USPSA match last sunday was shooting an open gun in .38 Super loaded to major power, with a compensator on the barrel. Now that is LOUD!!
But any handgun, even a .22LR is way above the level of causing permanent, irreversible hearing loss. Hearing loss is cumulative, so a few shots in self defense is minor, and it's the hundreds of shots in practice that really make you deaf.
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Science plus Art
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