Muscle memory is a funny thing.
For many years the only shotgun I had was my pump action Remington 870. Then I bought a Ruger Red Label for casual sporting clays and trap. When shooting the RRL, I would automatically try to "pump" the forend after each shot.
Last summer I did quite a bit of sporting clays with the Red Label and "lost" the instinct to "pump" the action, simply squeezing the trigger for the follow up shot. Then when hunting season rolled around it was back to the trusted old 870. There were several times that I didn't cycle the action and was let down when I simply squeezed the trigger again for a second shot