Questions about all eras of weaponry are welcome. (Questions about military tactics and gunshot wounds, on the other hand, I would not consider myself qualified to address, except in a peripheral sense.)
Again, this will be ongoing, so feel free to hop over at any time and suggest something you would like to hear about! I'm at http://www.slhuang.com/blog/ (http://www.slhuang.com/blog/).
(This is for general firearms topics -- Little Details is of course still the best place if you want to know what type of weapon Character A should have. :) But as always, I'll be lurking here to pitch in on those questions, too!)