Cylinder movement
The cylinder movement is a good bit more complex than you might think. It also varies a bit depending on the particualr revolver design.
I'm going to start with a S&W chambered for a center fire cartridge. At rest, the cylinder is held in the forward position by spring tension. When thwe firng pin hits the primer it pushes the cartridge to the forward limit of the head space. It then dents the primer. When the primer detonates it moves to the rear out of the primer pocret. There is a very short high pressure spike in the chamber caused by the primer. The pressure drops and then begins a slower rise again as the powder begins to burn. The pressure begins to move the bullet forward which tends to drag the cylinder forward with it. (But it's already at the forward limit. At the same time the case is pushed to the rear, reseating the primer. Also at the same time the frame begins to stretch. The pressure peaks (For most loads) as the bullet goes through the forcing cone. Whenthe pressure drops, the frame springs back ,shoving the cylinder to the rear where it bounces off the recoil shield, runs forward and bounces of the forward limit. In the case of the S&W this is the bottom of the cylinder well hitting the tail of the yoke. It's this latter bouncing back and forth that contributes to end shake over the course of time.
in the case of a Ruger Blackhawk the forward travel is limited by the cylinder neck against the front of the frame window. It has a much larger bearing surface than the S&W yoke tail and is the primary reason the Blackhawk will stand up to abusively havy loads better than the S&W. (Pressure has nothing to do with it, other than you have to have pressure to make things happen.)
The 22 will not differ from the centerfire much in nature, but the avaergae center fire will stir up a good bit more slam and bang. If I recall correctly, the Taurus cylinder is held forward under spring tension like the S&W. I think its forward travel is limited by the cylinder neck bearing on the yoke collar.
I hadn't thought about the rim on a rimfire expanding, but I'd suppose it does, and then gets reformed like reseating the primer in a center fire if the various clearances arfe right.
Note that the frame springs back to its original dimensions. End shake is due to battering on the bearing points, NOT permanent frame stretch.