Sometimes I can't contact with original authors of the locale and update the locale properly. I'm calling for help. If anyone want to maintain some locales, you can do it here. Submit changes on github or post them here.
Right now I can't contact the guy who made Polish locale (he didn't respond on my last message in discord).

Any help would be appreciated.

Also check out similar thread on Random Factorio Things page: https://mods.factorio.com/mod/RandomFactorioThings/discussion/5ff7ad556fc3cf74b535d81d

New locale strings in 1.2.5:

[mod-setting-name]
enable-plutonium-ammo=Enable plutonium ammo

[mod-setting-description]
enable-plutonium-ammo=Enable ror disable plutonium rounds magazine and cannon shells.