Given that it's so easy to go that little bit further - because "if it saves one life" - my new storage policy is as follows: I put a cable lock on my pistol, through the barrel, out the e-port, I then trigger lock it, then I put it in a steel transport box, which I lock with 2 padlocks with different keys from the same maker (visually identical) I then put the transport box in a gun cabinet that is locked, and then I wrap a 6 foot length of logging chain around the cabinet which is incidentally welded inside my safe (an old bank safe) which I have inside my concrete reinforced underground gun room, with a steel cage round it (the safe has a cage around it, not the reinforced concrete bunker - that would be silly). All ammunition is kept 3 Km away in a secret location, but I use more comprehensive security for that, that I can't disclose without violating the terms of an end-user agreement I have with the manufacturer. Magazines, pinned to one round of course - "think of the children", are across town in a safe deposit box which I got fake ID to purchase and have to show to gain access on the 4 days a week that the bank is actually open. All in all, I'm pretty satisfied that my Ruger Mark 1 is, at least somewhat, safe.
PS - for those wondering about the security of the keys to this, I have them in a safe deposit box in a bank in another town, 3 hours away. You can never be too safe.