This post don't really interest me too much but I will say that a lot of your most popular cartridges were first military rounds. Some guns as well as calibers were designed for one thing as later used for something else. In this case, military use turned into hunting or sport shooting.. It's all interpretation but most of you guys with AR's or AK's or M1's, 30.06, .308 or .223 have never assulted anyone with them.. So Imo they are what they are used for.. In my case varmint guns.. And sure you have to keep an AR clean but personally I keep all my guns clean..