From personal experience after many years of shooting,, wear hearing protection... I suffer from continual Tinnitus even from shooting a lot of .22s as a kid...Shooting on various ranges as a pistol team shooter and competition shooter, even with ear plugs and muffs hasn't helped either..
When I'm at an event with a lot of other shooters, I'm usually wearing custom injected ear plugs with electronic muffs over them,,,, Once your hearing is damaged that way, there is no cure...It only takes that one gun shot to start the damage...continual damage just makes it worse with each compression..
Depending on the barometric pressures, I'm continually bombarded with noise as if I were sitting in a field surrounded by a bunch of Crickets chirping all the time...sometimes just louder than others..interesting, but not enjoyable...