When the bank teller opens the cabinet, he grabs two piles of bills and puts them in the bag, and then in the next shot of him, he grabs the same two piles of bills.
When Jimmy is shooting cans in the beginning, he shoots six cans, the audio has seven shots and the video shows him fanning the hammer seven times with the audio for two shots coming after the final cut away, for nine shots from the six shot cylinder.