Everything else said, Correct. In a survival scenario, anything that fits in the barrel can shot out and mame or kill. Many enemy have died from glass shards, nails, stone, small chain etc. Powder is the only must have ingredient for all firearms regardless of bore size/caliber. Single projectiles have been used to take fast moving and flying game. But, the success rate probability is greatly reduced and the skill level require is considerably higher. The smoothies are also lighter weight wise to carry.