Mine is probably close to a 1000 lbs loaded and even empty at 754lbs it took three of us about an hour to get it in with a industrial dolly. now you add my alarm system in and i don't worry much about any yahoo getting it.
i doubt that they will get in it without a cutting torch and even then they must get past my alarm. shut my power off? nope! battery back up!
audible and calls the sheriff's office plus my redneck good old country folk nieghbors are better for response than my sheriffs dept.

my old gun boxes (as i call them) were cheap light wieght homaks. they were bolted to the wall but i never felt secure other than keeping my kids safe. i fell very secure with my safe just sitting alone.