Shots Fired: A Machinist Guide

[Massterchef]

2/3 GCDs? Gauss Barrel cast time is 3 seconds, and if you use it right after a GCD (which is the best time to cast it) assuming a 2.3-2.4s GCD, you still only lose out on 1 GCD. Even if you did have Rapid Fire up, you'd lose out on 2 GCDs because 1.5s GCD, and since Rapid Fire isn't consumed by Gauss Barrel, you'd still be able to pull off buffed Split/Slug/Clean Shots as well as having access to Ricochet + Gauss Round which is still higher potency (1x split + slug + auto attack - 420 potency, 1x ricochet + gauss round - 600 * 1.2 = 720 potency)

1s GCD animation from slug/split/clean depending on latency won't allow you to cast GB immediately after the GCD. Plus animation delay from Blood for blood and Hawkeye assuming you pop them after GB. In a perfect world yea it's only 420 potency but with animation delays and latency you are looking at atleast a 3 GCD loss