I am a new gun owner in Cali, and i have recently bought a Sig 9mm p232 sl. I am having a hard time find the right kind of ammo for it. I bought .32 ammo, but it looks to small and I didn't want to test fire the .32 ammo because im scared it might backfire. The seller said he used .380 ammo and they didn't fit he said. I did not try the .380 ammo my self. A friend told me he saw a similar sig gun that used 9mm X 18 ammo but he wasn't sure. I really want to find the right ammo so I take it down to the range. So you Sig P232 owners could you help me find the right ammo and the best ammo to use.