You have to watch carefully how many times you reload the 9mm cases. After several loads they may weaken and not hold the bullet anymore. Since the little 9mm case holds powder charges similar to .45 ACP, pressure can jump real fast if the bullet is pushed down when chambering. Everytime I go to the range, I come back with at least 25 - 50 once fired pristine 9mm brass, so I have every incenting to keep reloading regardless of limited brass life :-)