Not to sound rude but if your just in College and you never had any ringing in your ears before then it will likely go away. try many years of shooting and driving a large truck with the window down and Mega rock concerts and lots of parties. next time your buddy shoots something off and doesn't wait till you have your hearing protection on give him a piece of your mind . or slap him one up side the head. if your shooting in doors put ear plugs in and Muffs also . double up .