I went through a shooting course that preached grabbing the empty mag and manually removing it from the pistol in the reverse of which you draw a fresh one. Not saying that you place the spare in a mag holder, you just go to the full extent (chopping motion) and fling the mag away.
The instructor's justification was that if you trust it to be a drop free, it won't. If it does drop free and you fumble fook around with your spare and drop it in the heat of battle you may grab the first one you see. Or ram the spare into the one you trusted to drop out.
May be BS, but makes sense grip and force the empty mag since its of no immediate use if your shooting a threat. What kills this is if you remove and throw away the mag with rounds remaining. Not good to leave ammo behind. Kinda situation specific. Dump pouches make sense for scenarios like this.
I can see how some shooting sports like USPSA can screw this up in people that are trained to dropping mags to the ground. I'm unsure if this is a match rule for some other shooting orgs. USPSA penalizes shooters for this. IPSC, dump it and load a new one, fairly simple. Of course that's a game, but could still mess up that muscle memory (granted you've practiced enough to create it).
Interested in seeing other good methods people use.
