I am of the opinion that if you handle firearms long enough, a ND/AD will eventually happen. However, so long as you remember the most important rule, no one will get hurt. I will add that in my book, rule #1 is muzzle control.
Case in point, awhile back I was just putting up my Beretta Stampede .45 Colt. Before I go any farther, I will note that all handguns in the gun room (vault) are kept fully loaded. Anyway, I always cover my guns in a thin layer of oil. I had the hammer on half-cock in order to rotate the cylinder. When I was done wiping, I proceeded to rest the hammer as I always have. It/I slipped. But because of rule #1, The only harm was a hole in the carpet, a lead smudge on the concrete below and a ringing in my ears for a few hours.
I have since installed a discharge barrel with 22" of fine sand to save my carpet in the future
I have also had 2 unintentional discharges, one a slamfire caused by a broken firing pin spring, the other a worn sear. But again, the bullets hit concrete or dirt.
So long as your muzzle is kept in a safe direction, the only thing that will be hurt is your ears and your pride.
Kodiaz said:
I think you r rounds not penetrating stuff (monitor desk and such is because you use hollow points, hydra shock, etc.) In my HD pistol i keep 165 gr win FMJ. Good old winchester white box. I do this becasue hollywood has taught most people that bullets don't go through furniture and interior walls(plaster or drywall w studs every 16 in or so) so when the BG is taking "cover" behind a couch or a wall i'll just shoot through it and be done with it.
I use the 165 gr instead of the 180gr because it has a higher velocity.
velocity squared X mass = force
I hate to break it to ya, but small arms bullets have an incredibly tough time getting through barriers of any kind. Cars, walls, furniture, electronics, etc. all tend to slow them down severely or completely stop them. This does not begin to change until the weapon is a rifle and the caliber is over .30". Hollyweird has yet to figure this out.
Also, the 180 gain loads for your .40 Short&weak will be better penetrators than the 165's, despite lower velocity. Need I mention sectional density and momentum?
Lastly,
velocity squared X mass = force
The formula uses energy, not force, (E=MC squared), and this particuler equation does not apply to the kinetic energy developed by small arms projectiles. That formula is Velocity squared, divided by 450,240, then multiplied by bullet weight in grains. And muzzle energy/muzzle velocity are not yardsticks for penetration.