I know it's not what you're looking for, but on the sword front:
http://wiki.cohtitan.com/wiki/Iron_Blade
Lasts 3 days and you can get it back via Ouro. Not exactly a pool power, but the time rather than use limit means you can even incorporate it into your attack chain if you want.
While there's no gun-themed power pool on the immediate horizon, the upcoming Tech, Science, and Natural (which is, from appearances, not "Worse of Phil" after all) Pools will apparently let you add more ranged gizmos to your character. (I'm going by what's on a certain Wiki, which isn't much)
...another power pool with ranged attacks revolving around guns
this pretty much falls into my continuing effort to get a character with gun and sword attacks without having to keep up the revolver temp power
Thrythlind's Deviant Art Page
"Notice at the end, there: Arcanaville did the math and KICKED IT INTO EXISTENCE." - Ironik on the power of Arcanaville's math