actually I've said before in one sense
at least I don't care who has what inside their house, but if they carry it (regarding felons or RPG launchers, etc) then lock them up. Also if the bullets left their property when fired would be the same as carrying the weapon off the property.
Of course, just like the chant criminals will always get guns, you can realistically expect them not to carry them. Heck, you can't expect all normally lawabiding people to follow the law regarding guns. I've known plenty that kept them in the car concealed without a conceal weapon permit. I knew people that had them under the seat before conceal weapon permits were even available in NC to the general (non-felon) citizen.