Plus lower MP Cost. You also get to choose how many shots you fire (you can fire Up to 3, each one costing 1 MP). As you level it up you will be able to eventually fire more shots at a time (max of 6, like any revolver)
Yea Bio I recommend raising Vit and Wis right now. Vit will raise your physical defense and HP while Wis will raise your MP and magical defense. If your chara is gonna be a tank like melee chara those two are important. Plus I also suggest raising Focus a couple of times
Wow Silas got some good stuff from that post. Bio you might want to raise your Wis up a couple points though to get some more MP for your physical attack skills (that will also power up Energy Strike)