I am not dissing gun safes by any means. I was impressed in my early years by a girlfriends father and his “safe wall”. It took me many years until I could build mine. I have invited trusted friends to try to find it...and they couldn’t.(One was a LEO) Insurance will cover everything else, I just don’t want my guns taken by a lowlife.
My panic room is next on the agenda.
But were they using hammers or axes or crowbars to fid it? No. So don’t delude yourself that it would never be found. Given enough time and it would be.
I know a guy who keeps all his guns in an old refrigerator, but as soon as someone decides that burglary make a guy thirsty, the gun stash will be found. Plus there is zero fire protection in just hiding the guns that way.