Quote Originally Posted by Ooshima View Post
So you must be always right? Seriously I have been using manual all the while until recently I tagged BL to Heavy Shot for convenience and nope, there isn't a difference.

There might be a difference if you are tagging more than that, such as Heavy Shot-BL-Straighter Shot together but if it is just Heavy Shot (GCD) and BL (OGCD) together, it won't make a difference because whichever is available first will fire off first, such as BL will fire off first if Heavy Shot is still on CD.
You clearly know nothing about the GCD que system. You can't que attacks that are inside a macro. So every heavy shot, you are attacking late and hurting your uptime/dps.