I have tinnitus for 25 years, be 26 next month. Noticed it the same time frame I had a required employment physical which included a hearing test. After the test, the audiologist questioned me about being left handed and asked if I fired guns a lot, both were true. She explained I had pretty good hearing but there was a loss at a range specific to gun fire. There was more loss in my left ear as compared to the right which she attributed to me holding a gun in mostly in my left hand. I continue to have yearly hearing tests which are fine. I’ve learned to ignore the noise and life moves on.