Each type of hunting: upland, steppe, mountain, swamp and water, requires its own type of weapon. For example, for hunting small animals, a combined twin gun is suitable. With one 5.6 mm rifled barrel and a smooth 20-28 gauge. And for a large animal, it would be best to take a single-barreled self-loading carbine of 7 or 9 mm caliber chambered for a powerful cartridge with an expansive bullet.