Bob,

If you have your hearing loss curves, I have successfully set up some stacked 31 band EQ VST plug-ins for folks for them to listen with flat response headphones and with their hearing aids not in their ears.

I can show you how to do it, but you need a pretty decent pair of headphones. And a DAW that will allow you to put several instances of EQ VST in series.

Significant notches like the typical 4kHz gunfire noise induced loss are a little more difficult to deal with in this technique.

No promises on a miracle solution but I’ve helped several people with this in the past.

Hit me up with a PM if you want to get started.