Even though I expected to throw destiny to the wayside when COD dropped I found myself running multiple hard raids on destiny the last 2 days and not getting a chance to play any COD at all.
I'm going to hop back on COD tonight and have a tip for the guys that were running out of ammo like I was. Turns out there is a new reload mechanic, if you double tap the reload button it reloads faster and dumps everything that was in that magazine.
If you hit reload once it'll be a normal reload that won't cause you to lose any ammo but it'll be slower. It'll take some getting used to, I usually mash the reload button constantly after getting a kill in preparation for the next.