Shooter hit on the head. I use ear plugs but I always have muffs with me in case I need them. If I take someone new to the range I'll give them both to use. You want to be comfortable when you shooting. On a side note I cleared out a busy rifle range right before hunting season one year. There was 30 plus people at an out door public range. After shooting all my other rifles I pulled out the .338 and screwed on the muzzle break. One guy saw me. He told his wife something then they pulled out muffs to put over their plugs and sat back and watched. The firing line was under a roof so when the fist shot went off must people weren't prepared for that. By 10 shoots in my friend and I and the couple were the only ones left. And they just laughed.