Howard Leight Impact Sport Electronic Earmuffs https://ads.midwayusa.com/product/18...UaAjLiEALw_wcB They don't work for me. I had my wife try them and they work for her so it's me and not the muffs. Any thoughts? Background: I have about 30% hearing in my left ear and 0% in my right ear. And I am going to attend Grant Cunningham's revolver course in early November. I'll contact Kim, my audiologist about this and see if there is anything she can suggest. She's an NRA gal. In the meantime I'm open to any suggestions from the nice folks here.