I haven’t had my handgun for very long now. I recently purchased a S&W M&P Shield 40. I really like shooting it. For right now I am using Winchester 165 grain Target ammo. For home self defense I am using Federal Premium 135 grain Hydra Shok HP. Having just acquired my handgun I only have purchased a few boxes of ammo. I live in a apartment so in the event that I would have to use my handgun I am concerned about over penetration. I have considered G2 Research RIP 40 ammo. Does anyone have any suggestions on the issue of over penetration and the right kind of ammo would be best for me since I live in a apartment? I live on the first floor of a two story apartment building. My apartment is on the end of the building so one side of my apartment doesn’t have a apartment next to it, I live by myself. Thanks for any input.