I’ve thought of this problem too. I have a .357 loaded with .38s by my bed and there are 5 walls between my bed room and those of my children, I believe even a .38 could penetrate through all 5 of them, if it only went through the dry wall without hitting any wood. Am I wrong?
Hollwpoints?
If this is a concern I highly recommend this manufacturer, I bought the 10mm 46 grain at 2400 fps. I tried it out and it works just fine on a gallon jug of water, feeds good too.
http://magsafeonline.com/prices_specs.php