Well I tried out my Rapid fire element gun.Fought Low rank Diablos,Rathlos, and Barioth and it did pretty well. I'm kinda deciding on a good gun for Rapid fire water. I have these choices. Devils Grin Frame,Royal Launcher frame, and Thundercrus stock. The Devils grin frame will give me more attack but it has deviation. It randomly will go left or right and low when I shoot.
Also will have dragon shots.This is a medium bowgun.
Other option is swap out the Devils Grin frame for Royal launcher frame.This will give me less attack but I will have no problem with diviation.It will be a light bowgun.
Oh here is the skills I have on the set. Attack up Large,Elemental attack up and Bonus shot.