When Dad got back from Gunsight, Rule Four (the last rule added to the Four Rules Of Gun Safety) had been: "Keep Your Finger Off The Trigger Until Your Sights Are On The Target." While at the range and training, my father and I could simply quietly mention a Rule 4 violation, and both knew to watch for fingers in trigger guards when they shouldn't have been. Nowadays, Rule Three and Rule Four seem to have been transposed.
So it would seem that a certain fellow out of Benbrook, TX did violate Rule Four when he fired off a round that didn't stay to his intended backstop:
RULE IV: BE SURE OF YOUR TARGETAnother way of looking at it is a Rule Two violation, which has always been:
Know what it is, what is in line with it, and what is behind it. Never shoot at anything you have not positively identified. Be aware of your surroundings, whether on the range or in a fight. Do not assume anything. Know what you are doing.
RULE II: NEVER LET THE MUZZLE COVER ANYTHING YOU ARE NOT WILLING TO DESTROY.With a .50 Browning, that item that you wish not to destroy might be some miles off. Here is a case in which the old "laser rule" (or really, doctrine) doesn't work. To be wary of what is miles down range, one must take into account bullet drop. And wind. And maybe Coriolis
Look, I've said it before: Nobody's MAKING you possess, handle, and shoot a firearm. You're the one who took on the responsibility. If you can't handle the responsibility, I would invite you to stop handling firearms, post haste. There are plenty of other hobbies, past times, and pursuits for you to go about. With all due respect, if keeping up with Four Simple Rules is too hard, then we of the general shooting community don't want you.
No offense intended, but go away, okay?