I learned on “Storage Wars” that any safe, no matter how big. can be broken into in a matter of minutes.
You might be right but I once accompanied the Son of the founder of a very large department store. We were going to retrieve some records.
When we got there, I was shocked. The safe was about 8’X12’ and was on railroad tracks. It was huge! I have no idea how they got that thing inside the store but they may have very well ran it into the store on those tracks tho there were none on the outside.
The Number One way to secure a safe so no one can ever break into it is make sure no one knows you have a safe. Further, for someone to find one in your house you place it in a manner that would take them an hour or more to search for it.
Large caliber round or explosive?
I learned on Storage Wars that any safe, no matter how big. can be broken into in a matter of minutes.
All a lock can do is keep an honest man honest. A lock will not keep out a real thief.
Then there was that case in 1976 where the bankers needed three hours to break into their own safe ...
... and they were not pleased!
From what I've seen on tv, movies and read in the NYT, a 9mm semiautomatic with a high capacity magazine will blow the door to Ft. Knox open.
Well the time depends on where the safe is located. A large one with good door hinges that is bolted to a slab inside a closet or narrow corner is going to take a while longer. The worst case estimate on mine is around an hour with the right tools.