Hold right trigger for a while, then press down and right on the d-pad in succession. Then soft sporadic squeezes of right trigger, but don't over do it.
Yeah I just tried to include the various ways you can fire a gun in this game. I'm curious about which method people find more "fun."
(I'm sure you got it, but my last post was about Smashing an Infinity. Such a "fun" process, don't ya think?)
Btw I voted the 4th option. So fun. It feels like I'm playing some sort of FPS/RPG hybrid where I get to "shoot" at various virtual "enemies". Can't help but wonder if the other options have the same effect, think of the replay value...