when i was little we used to set off and throw fireworks at each all the time. We had M-80s,M-90, and something called the M-500 which was the size of a bucket. I guess that why my ears ring to this day and sometimes i can't hear what people are saying. I wear my muffs or hearing protector now all the time when i shoot guns, go to car races, and anything like that. I really wish they would have put a waring or something on those thing.