Fast, can give you much more ammo then Extra Ammunition. Brilliant brilliant card.
The extra cost is no problem, characters have more money than most. The extra XP is perfectly worth the bonus ammo and saved action. Just ask Leo Anderson, he allways has some ammo in his supply pack, Mark Harrigan too!
Jokes aside, there's a variety of firearms so all the fighty dudes would do well to at least consider this card a bit.
Edit: wups, Mark cant take it! Still good tho.