Hi all, I just shot my S&W .44 magnum revolver for the first time today. I was using Remington ammo. I fired all 6 rounds and the cylinder became jammed on the last round. I was unable to eject it, or cock the hammer back, or pull the trigger. It appears that the casing is pressed up against the rear of the gun, so I'm not sure if the firing pin is stuck in the casing, or if the ejector rod slipped back and is jamming the cylinder. Any ideas on how to get it out, and how to prevent this in the future? Thanks