*Ranged* Hit Reg Like Critical Strike

I want to have my ranged weapon to hit almost all the time. kinda like critical strike, where I could script the projectile to bounce or ricochet off of walls. So far I’ve used fast cast but I don’t really know how to use it to its full existent. (Heavily Inspired By Critical Strike)
Examples: Critical Strike Gunner Class Shoots Out Bullets (Squares), The Hit Boxes Are Really Fair

Any help is appreciated