Thank you for taking the time out of your day to question every single of the 900 accidental gun deaths and, through your immense research, surmise that these were all due to people believing the gun wasn't loaded. Actually, the correct mean of deaths every year in the United States is 762 (taken from a 2002 estimate). See, when you don't research things, and throw out a ballpark number that isn't true, no one has a reason to believe anything else you say. Haven't you ever heard of an accidental discharge? There are times when the person knows the gun is loaded, and doesn't intend on shooting it, but accidents happen. I believe that people in war have more of a chance of dying from the enemy than from smoking marijuana through a shotgun.
Personally, I think it would be very hard to mess this up. Really, truly improbably. Not saying it hasn't happened, but I truly believe that if someone died of accidental discharge from taking a shotgun hit in war, chances are they would have died, IN WAR, anyways. Anyone ever see the movie platoon? The way it was done in that movie looks like a very simple process.
What I used here in this argument is called tact. People are more willing to believe you when you use it. When you are condescending and constantly use expletives, people will only see you as a jackass, which I believe you have made yourself out to be. Express your opinions as best as you can so that others may see how you feel, but don't be a jackass about it. That doesn't help anybody.
http://www.nsc.org/lrs/statinfo/odds.htm
http://www.m-w.com/dictionary/tact