I don't do serialized inventory daily but would be aware of a missing gun from my house in short order. I also have some stored elsewhere for better security but it might be four days before I learned of a break in.

That is why I added the part about not knowing the theft had taken place. It could apply in a person stole and otherwise secured weapon from your house than robbed the local gas station while you were at work. Likely you have no way of knowing your gun is missing until you come home.