While there may be some cases where the urge to tamper with a barrel lock presents itself, in truth the only right way to open a barrel lock or cylinder lock is to use the proper tool or meter key. A quick search of the Internet or YouTube will likely turn up dozens of references to ways to open a barrel with everything from a screwdriver to a wood screw. While this may seem like an inexpensive way to open a lock it is quite to the contrary. In almost every case tinkering with a lock using an unapproved device will in some way damage the lock and prevent it from operating normally in the future. Picking a barrel lock or tampering with a barrel lock should never be attempted and should always be avoided. Those who offer lock picking advice with regard to barrel locks and meter locks are doing customers a disservice and usually end up costing them money and trouble. Stay safe and use approved keys when trying to open a barrel lock.