(which was done by Topperwein and Linde all the time) hitting the 2 cans in midair is a piece of cake. It does, however, take an intense focus on speed-efficiency of movement, far beyond what the typical plinker-cop is going to work on. The only gun likely to be at hand when one is needed is the one you are always carrying. In most cases, for nearly everyone, that's NO gun at all, or at most, a pocket pistol.