I've been wearing hearing aids for just over two years now and at first I couldn't believe all the sounds I was missing. As for shooting I take them off when I'm at the range but for hunting chickens I leave them on and a couple of shots doesn't really seem to bother me that much.
The last year I hunted without hearing aids I was walking down this trail and my son came out a short distance behind me. He said he called me in a normal tone and I didn't hear him. He said he pick up a stick and broke it in half and I didn't hear that either.
Finally he caught up to me and said. "Are you deaf or something?" I said What?

Now if I'm walking in the bush I turn them up a bit just so nothing sneaks up behind me.