I recently bought a house my wife thought it would be a good idea to shut the door to one of the rooms.
How to drill a door lock open.
Most locks have about five tumbler pins to drill through although some have six or more.
Understand the lock well enough to drill it properly.
When a replacement lock can be found then the lock can be drilled open.
This destroys the pins inside the lock cylinder allowing you to force the lock open.
Drill a hole through the lock cylinder through the guidance point.
Certain locks are not going to open as easily as others even with drilling.