Quote Originally Posted by Zansei View Post
snip.
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Secondly, the reason you do 1-2-1-3-2-3 is because while under the effect of Rapid Fire, you skip the "cast time" (from Gauss Barrel) of Split Shot. While under Gauss Barrel, Slug/Clean Shot have no cast times but Split Shot does. This way, with 3 shots you are getting maximum value out of Rapid Fire.

Spread Shot is for when they are in a wide fan in front of you, and is more TP efficient at the cost of lower damage (AOE sustain). Grenado Shot is when they are further away/clumped and you want to do more damage right now (AOE burst). Richochet loses value the more targets there are. Richochet should generally be used on *one* target when possible, as you get the full 300 potency on the single target as opposed to spreading it out.

Hope that helps!