Maybe what should be asked is how the ammo issue became one in the first place. If we take a look at a screenshot from the classic film about weapon's procurement called "A Christmas Story" we can clearly see how a problem with ammunition loading and the time required to load up and get back in the fight could be avoided in the first place.
In this shot we see Ralphie being asked by our friends the ammunition handlers, "What brought you to this lowly state?"
His reply, "It, it, it was, poor tactics."
On the other hand, for those of us who have been in the military or know about it, maybe the SNCO's were right all along about where our troubles REALLY lurk...