Well my friend I am going to tell you straight up the way I see it. It all depends on what you are doing. All the twist rate talk and grains are for target shooters. I have shot probably every available to the public ammo from my mini. It all shoots well, some hits harder than others. If I were shooting competitively I probably would take into account the twist as it pertains to bullet weight. But as it is I am happy to be combat accurate and I haven’t found a round it doesn’t perform good center mass shots, including the cheapest steel case ammo I can find. The only reason I buy brass ammo for my mini is so I can reload and I want as much reloadable brass as I can get just for options. I am happy shooting steel case ammo…It is fact that it doesn’t shoot as well as nicely loaded brass case American ammo but it shoots accurate enough to kill at distances I would shoot with a carbine. Don’t read too much into the internet bench shooting experts.