You need two guns. All guns break and you don't want an expensive trip ruined by having to shoot with a loaner gun that does not fit you. I brought two guns I was equally comfortable shooting last time and they served as back-ups to each other in the case of a problem.
For my last trip I shot a Beretta 391 in 12 gauge (I was shooting ducks also) and a long-barrelled Beretta O/U in 20 gauge. My only regret was not including the 28 gauge barrel set for the O/U.
If you are doing A LOT ot of shooting the 391 will eventually become a single shot (quickly fixed with a cleaning). I alternated between the guns so I did not have to clean the auto as often. If you bring an auto, make sure to bring a parts kit with you. Cole makes one for the 391 with the parts that most often need replacing. Also remember to have your back-up with you and not at the lodge.
Enjoy your trip,
Ken
