>>64117861
>>64117985
You slide it down and push the cylinder out.
It's actually pretty fast from a reloading standpoint so long as you're wearing a glove on your left hand because it can get hot after a few cylinders.
IE you push the latch down with your left thumb, push the cylinder with your left index finger through the frame, then depress the plunger with your thumb to clear the spent cases.
At the same time you use your right hand to grab a speedloader, so when it's empty you pop rounds back in, pop the cylinder shut and you're ready to go.
The goal as far as I know with putting the latch up front was to reduce cylinder end shake, which effects accuracy.