@sharondegrouchy How does one cope...? what do you do now to hear better, you ask? It is always good to get a second opinion from a very reputable Clinic. How long ago did you first notice your hearing loss/ tinnitus?
For example, when one goes to a rock concert and the sound is cranked up tooooo loud... when one leaves and goes outside ...your hearing loss is very noticable.. but slowly it will come back in an hour or so...hopefully... but not with the gun sound wave. It is so huge that it does physical damage like tearing the paper on a speaker cone.
I was in the military around big guns..back when they used cotton to stuff in your ears to reduce the impact of the shock waves... Of course Cotton would do a lousy job of that...
What sound protection did you use at the gun shooting range? Did you ever measure the sound level in the Shooting range? You can get an app on your smart phone to measure sound level.
The inner ear damage I received from the big gun noise, according to the first ear doctor I went to back in 1979 is not ever going to get better, the tiny hair like sound/vibrations sensing elements in the inner ear were just mowed down, never to rise again...by that huge noise.. So as I aged the hearing loss increased particularly in my good ear.. My left ear (the one that caught the gun shock wave) is profoundly deaf.. so the hearing aid in that ear just broadcasts the sound it receives over to the right ear (it is futile to try to amplify it to the level necessary for that ear to function).
I wish you luck.. Protect the hearing you have.. Go to a very reputable Clinic like Mayo and get help with coping with the condition. Take up a different hobby..