I'm not sure if I should post this here or on the other mod, but with this mod installed gunturrets deal zero damage to the trashteroids.
It's a bit strange since the submachine gun deals dmg just fine and both deal physical damage.
https://mods.factorio.com/mod/ownlys_tracers

Thanks for the report. Yep, not my first rodeo with this sort of mod.

Good news: Because I have dealt with this sort of mod before, I know how to fix it (soonish… I have more stuff going on right now).

Bad news: Distant misfires (and related mods, such as that one) make Rubia substantially more difficult than intended. I can make it work so you CAN beat the planet. But know that you will be at a severe disadvantage. This isn’t just a “tune the numbers” issue, but mechanically this sort of mod is really bad when it comes to sniping a few enemies per area. The only way to not be at a disadvantage would be if my mod just undid all the changes of the other mod, and that just doesn’t make sense.

Fixed in v0.69.111
In testing, I saw that Ownley's tracers still puts you at a disadvantage, but not as horrendously as distant misfires would. Good luck.

Tyvm :)