Here on the river we use a shotgun more than most people in other types of terrain would. During the summer the vegetation is as thick here as some jungles I've been to including Brazil and PI, so the shotguns limited range is not a big disadvantage after all. Ammo stored in the hot, humid SE climate seems to last longer than you'd think too. Fairly recently we fired off some 45 ACP that a friends father had stored in a barn back in 1945 when he returned from WWII. It all worked perfectly. It had been kept in a waterproof, air tight container, but with no temperature control in the summer or winter.