Habits can be bad for you, but this is one that can save your life, or someone elses. You know that on a range you prove your gun is empty before you leave the firing point. Do it to your shooting companions every time you move position, or get in a vehicle, or put your gun down. Even if you are alone, do it for yourself. It becomes second nature and you won't even notice it after a while, but it can save a lot of pain, trust me! The other thing that pays is always, but always being aware of the direction your muzzle is pointing when walking round with the gun. Treat all safety devices as defective however well they work, and you will not go too far wrong. There are no excuses and no reasons to justify the claim it was an accident, so make sure it can never happen. Its down to you!!