Storing a gun -- any gun -- should bear all the hallmarks of an ancient Aztec ceremonial dance, commanding deep respect for its underlying purpose and zero tolerance for the slightest mistake (Yes, gods were pretty fussy back in those days, and missing a beat conveyed the death penalty).
1. First and foremost, your gun should NEVER be in a place where a child can reach it. Second, it should NEVER be in a condition that would allow it to be readily discharged in the event that one did. That said, ALL guns are ALWAYS loaded, and yours is ready to go off if you breath on it. All the time. No exceptions. It is your responsibility to make sure no one does.
2. Keep it locked when not in use, whether in a strongbox or with the help of some sort of restrictive trigger device. Preferably both. The gun hasn't fired yet that was first made inaccesible and inoperable. Read "inoperable" with rule #1 in mind.
3. Make sure that the gun is always in a state of "constant alert"; meaning impeccably clean, lubricated, and ready to recieve ammunition on a very short notice.
4. DO NOT... repeat, DO NOT... reveal its location to anyone outside those you wholeheartedly trust. And even then, think twice before you do it. What goes around comes around; sometimes unintentionally; and with this in mind your next thought should be geared to the task of THWARTING the cesspool muck that is casing your house for an easy plunder -- not providing him with a roadmap!
Best regards,
Heraclitus