Originally Posted by
Dracodraco
First question, you won't have focus to go aimed-aimed-marked-aimed-aimed (you're spending 230 focus in a 5 second timeframe). You'll likely be able to do aimed-marked-aimed-aimed before the vuln debuff runs out, maybe 4x aimed shots.
Second, during your opener you're under Trueshot, and most likely also bloodlust. Haste decreases the regeneration time of Sidewinders, and increases your base focus regeneration. These two facts together means that you'll likely only have 7-8 seconds between each sidewinder, rather than 10-12 seconds during your opener. As vulnerable lasts 6 seconds, it means that after you fire your Sidewinders (7 seconds to next sidewinder), you'll fire marked shot (6 seconds to next sidewinder), then as many aimed shots as possible - when vulnerable runs out, you fire another sidewinder and debuff refreshes.
This is done because you want *as many marked shots as possible*. It hits a LOT harder than an aimed shot, so you want to end your opener with as many as possible, so you use them as early as possible and try to make sure you have no sidewinder charges when you leave the opener (with one comming up a few seconds after, then settling into the "conserve" part of the rotation).