south america's had then / still has somewhat today --some very mean jungle areas -- with several nasty critters that can kill and eat you -- jaguers , and packs of wild boars -- for starters --there are others things as well ---so a short barreled powerful two shot weapon would be quite "useful" down there during the early 1900's ( in modern terms it be like having a sawed off double barrelled 12 gauge with slugs -- not such bad ideal)