Let's talk shooting drills. On another thread, I mentioned a drill we do. I call it the "Buddha how many more in the box!" Drill
You load 2-3 rounds in a buttload of mags and put them in a box. The shooter stands ready and the helper kneels down on his weak side. The shooter will engage and combat reload. Over and over again. As he empties the mag pouch, the helper will replace the mags until all are done. Change over and repeat.
Don't try to pick up the empties until the weapon is safe and holsterd and don't go forward of the shooter at any time. Doesn't work real well with chest mounted pistol mags.
Also - you need to have the basics of the combat reload down before you try this. You will need to dry fire it about 10,000 trillion times prior. It is a waste of ammo IMO to do the exercise before.
Oh - and as always, marksmanship counts...