"This video tells you pretty much everything you need to know to play as a fast shot burst using character in Fallout 2 (with the strength of best weapons showcased).

I also have this splendid F2 RP LP where I go through the whole thing ironman, using only flamer & rocket launcher in the endgame battles (to much success):
http://www.rpgcodex.net/forums/index.php?threads/lets-ironman-fallout-2.87870/"