Stopping power comes from how big the projectile is. Wouldn't have much stopping power but if you could get it going fast enough it would work very well. My father was in the U.S. Air Force durring the cold war, and in Basic Training they learned the M-16 rifle like all U.S. soldiers. The M-16 uses a .223 type bullet, a very small bullet with a whole lot of powder. Of course there were some people who didn't believe that this little bullet could do a lot of damage, so they had a demonstration. The demonstrator set up several 55-gallon (about 209-litres) drums full of water. He then produced a .30 calibre magnum rifle, and a .44 calibre magnum rifle, and an M-16. Both the magnum rifles shot the bullet straight through the drum, making neat holes front and back, with little streams of water pouring out. He then asked the most skeptical neophyte soldier to come up and shoot a drum with the M-16. The soldier shot the drum with the little bullet, and the bullet moved so fast that the drum *exploded*. That's called hydrostatic shock, and it happens because the little bullet goes so fast that it makes a shock wave through the material. M-16 bullets have less range than an AK-47, and they move faster. The M-16 is harder to use than the Kalashnikov, but more effective, except that the bigger, slower rounds in the AK-47 have more stopping power (Due to more momentum).