the ''trick'' with the Remington cylinder swap is: with the barrel pointed away from you,and in a safe direction, put the revolver on half cock [the point at which the cylinder spins freely] drop the loading lever, pull the cylinder pin, and roll the cylinder out to the right.To re-install the cylinder,reverse the process,that is, the cylinder goes in from the right to the left.as the cylinder rolls into the frame you should notice the tip of the hand [the little metal arm that pushes the cylinder up to align the next chamber] in the way.This is no problem,as the cylinder has machined ''divots'' in the back to accommodate the ''hand''.as you rotate the cylinder,just make sure the hand finds it's way into one of the half circular depressions,always rolling the cylinder slowly,until it's back in it's original position,slide the pin home,and raise the loading lever until it latches in place.really, this is much simpler than it sounds,and takes about three trys until you are an expert,swapping cylinders as nonchalantly as Clint Eastwood, in Pale Rider.