reason for this is because most of the time your running around, if you arent in stand you will automatically go to your knee to reload which can be disasterous in some situations.if you are standing even running you will ALWAYS reload faster without hesitation.i see so many ppl still die when in a firefight and not be in the "stand" position and go to reload, then you see them stop, go to a knee, reload and fall over to the ground dead

reloading in any other position will only speed up the time it takes you to DIE not actually RELOAD
most veterans i would assume should know this and live by this, but good tip for new ppl , especially if it will be the same way in socom 3.