Oh I get it now, that's brilliant! A reload ready to go + 5 ammo stacks and by the time you use up those 10 your QR will have finished its CD timer! I see! Leaving my comment unedited so that if anyone thinks the same thing I did, they'll see your explanation and realize why you do that. XD

I wanted to add one thing to the tips section then. If the pull time has to be changed/reset for some reason (we all know that one guy that realizes he has to bio in the middle of the pull countdown) then spam Quick reload to make sure you keep those 5 ammo stacks alive.