If you consistently load and unload your ammo from mags after you duty shift ends or when you come home, you need to consider that every time you load and unload the same cartridge it could have a bad effect on the bullet.  I have seen this many times with rounds that are noticeable shorter because they were loaded and unloaded many times.

If you are going to be doing this, rotate the cartridge to the bottom of the magazine.  This will keep the bullet from being pushed back into the brass.  Worst case scenario is that you have a bullet that won’t function.  In the case of the .357 sig mentioned earlier, it was pushed all the way back into the case.  The other thing that could happen is higher than normal pressures.

Keep your gun functional and your ammo good by being mindful of wearing out your ammo.