Well, I just made 2 open and simple maps to properly test the NW3 nuclear weapons better. Please check the description/details below.
Just enable NW3 and start either map. The nukes are located closely (if you don't find them, just type "fly" and look around and you will certainly find them easily).
The files within the zip go to the Maps folder in your UT install.
Alternate download link: Dropbox.com
DISCLAIMER: These maps will crash a lot with the nukes if you fire tons of them at the same time or/and add at least 10 bots (and even less, depending on the situation and what you're looking at, in which angle, etc). I am still tracking the exact reason of the crash (since it's a native problem with UEngine), but it seems to be a problem with the decals or/and what they generate afterwards, so I would ask whoever tries the nukes out in these maps to try with 20 bots and with decals on and then off, and let me know if with decals off it never crashes (with decals off the debris effects will be disabled as well).
I am not sure if I am going to be able to fix this problem, but if I can at least understand what's causing it, probably I can avoid or manipulate the game in such a way to fix it (like I did with a few other things in this mod so they could work properly).
It's not critical though since it only happens in absolutely giant maps like these with nothing further around (maps no one really plays for real anyway) and in online games the odds of a client crash are far smaller (the server never crashes).