Slowly practice both ways. Which is more efficient? Which is more reliable?
What I'll add to the good above advise is which feels more natural while doing the reload. If it feels natural speed (efficiency) will come with practice
NRA Life Member, NRA Range Safety Officer, NRA Certified Pistol Instructor, IDPA Safety Officer, USPSA NROI Range Officer,
As you are, I once was, As I am, You will be.