9x19, Luger, 9×19mm Parabellum They are all the same thing just different names. 9×18mm Makarov is not the same and should not be used. best weights are 115 gr, 124 gr and 147 gr. I agree no steel or Aluminum cases or no steel bullets. My range checks all incoming ammo with a magnet before I can shoot it.
If you are going to buy a home defense ammo, Hollow points etc, you should shoot the same bullet weight on the range. This will get you used to the aim and feel of the gun with the ammo. I use 124 gr hollow points for my home defense ammo so I pratice with 124 gr FMJ or TMJ rounds.