Most shotguns also have (for lack of a better term) a shotshell release inside the magazine tube, depressing that will get shells out of the shotgun magazine tube without cycling the action, you get the chambered shell out by racking the slide. And keep your finger out of the trigger guard!
HOWEVER, you never load any weapon for the first time until you are sure you know how to unload it safely AND you should never chamber a round into any weapon until you are ready to shoot. The second part is most important in hunting when climbing fences, crossing ditches etc. It's also useful in home defense situations, I know that if I were a bad guy and heard someone rack the slide on a shotgun I would be looking for the closest exit even if I had to make a door on the closest line of departure.
Forgive me if I'm sounding preachy but I grew up around guns and a lot of people did not.