A relative who served in army infantry in Vietnam told me to stay away from ball(MIL) ammo in my AR because it gunks up the action quicker? I'm aware that just because the military uses something doesn't mean its necessarily the bestand my old timer's memories are of those early issue M-16A1s but is there any validity to what he's saying? I've used both types and while stick-powder ammo seems to be a little more accurate, does consistently using the ball stuff cause more hassle?