Most disciplinary issues are simply annoying. When it comes to gun muzzles, disciplinary failures can be really, really bad.
So what is muzzle discipline? Simply put, it’s making sure that the muzzle of your gun obeys your safe intent – at all times – no matter what. It can never, ever, ever point at anything you’re not willing to destroy, not even for a split-second.
Read the rest of number five in this series: http://www.outdoorhub.com/how-to/the-seven-deadly-sins-of-handgun-shooting-an-undisciplined-muzzle/