While no expert on the M97, couldn't you eject the chambered round, then remove the round on the lifter before closing the action on an empty chamber?
Alternately, depending on the series M97 you have, you can release the next round from the magazine by pushing the two buttons on the bottom sides of the receiver (later series), or reach into the bottom of the receiver and release each shell latch in turn to release the round ready in the magazine, then elect the last round from the chamber.
reloader