Drilling without replacing the hardware will result in an unacceptable gap in home security.
How to drill a door lock open.
How to drill different cylinder locks including very poor footage of one being drilled.
I recently bought a house my wife thought it would be a good idea to shut the door to one of the rooms.
This destroys the pins inside the lock cylinder allowing you to force the lock open.
This room happened to have a key ed lock on it that.
When a replacement lock can be found then the lock can be drilled open.
Most locks have about five tumbler pins to drill through although some have six or more.