The reason for this question is, in a shtf situation and I'm out somewhere sitting in the woods or wherever and have to reload the sticks or drum quickly, if the sticks are faster to re-fill, then those will be the main thing I'll carry. Like maybe 1 preloaded drum and the rest sticks. Seems like xtra drums would be bulky and akward in pockets or jackets, etc.
My only experience is re-filling the factory 5 round mag, which can be done very quicky. Like 5 or 6 seconds.