The uranuim cell gun should use depleted cells instead. Penetration!
Hmm... that's make me thinking about using Nuclear Waste for ammo, spread the radiation!
Didn't notice radiation make lag (put many block at once). At my old computer -that already broken twice- placing or removing a single block will drop fps from 17-19 to 5-8, nuke reactor explode make it freeze like 1-2 seconds.
So... radiation... out!