[Gray Lensman]

Unrelated to your shoot issues:

To get the benefit of actually playing the TMO mod. Remove the RSRDC mod.

Why?

The RSRDC overlay actually changes TMO major game realism behavior beyond just the historical ship movements. You are NOT playing TMO when you load up RSRDC following it. You are playing a morphed version of RSRDC that has been touched up (so it doesn't crash when loading after TMO) to make you think you are playing TMO with only the historical ship movements changed.

Also, avoid saving during ship encounters AND definitely DO NOT save on top of another save. In other words do not do SAVE overwrites. I always do fresh saves and then go back into the Save menu and delete old unneeded saves. Note, you cannot delete saves from the Load menu screen.