Gunslinger Build (Lv. 10-200)

Your build has Invinsible Shot maxed at 45, unless Gunslingers have a totaly failed DPS, I think that's when you should start STDing. :O
Just jump around spamming Invinsible shop until you get to one end, then kill the mob and repeat. I've done it on my Page and it's much faster than spamming Power Strike. :[