Its tough to explain in printed word, but I'll try.
I open the cylinder and bump the ejector rod while moving the gun from my right to left hand. It can become on fluid sweeping motion.
Cupping the cylinder in my left hand, gun downrange, I drop the reload into the cylinder. Close cylinder as I switch back to a shooting position.
It takes practice, but once you get it down, its really not hard to do and its fast.