I would like you to strip out the following factors from your stats:
- illegal/stolen guns used to commit crime (murder, rape, armed robbery, etc)
- suicides
I'm sure you will find that the stats are much different for negligent discharge related deaths/injuries. Once again, its down to responsibility. Those who treat guns, cars, other dangerous things with respect, aren't normally killed. The ones that shoot irresponsibly, drive like maniacs or swim drunk are likely to die.
There really isn't a differentiation between legal and illegal guns, it's just guns. Every gun and every bullet is potential to kill with a device designed to kill.
The military are incredibly restrictive when it comes to firearms, yet still soldiers die from accidental and/or negligent discharges, and they treat the weapons with a massive amount of respect. It's a risk soldiers knowingly and willingly accept, but when I go down to the bank or grocery shopping I do not accept the risk that I might get shot by somebody chasing a bag snatcher or car thief. Unfortunately with a weapon designed to kill it only needs a single mistake and somebody can die.
Responsible ownership requires they be locked, in a safe, with a key that kids can't find or that a burgular can't steal, and they sure as hell don't get carried around town, left in cars, or taken to church. Anyone that can do that can have all the guns in the world and I wouldn't care. Keeping them in your beside table draw is just providing a weapon for someone else to use, perhaps that person should be considered an accessory to the rape, murder, armed robbery that occurs with that weapon if stolen. Get criminals to find their own, but since most guns used in criminal activities are reported stolen by legitimate owners, good gun security will lessen illegal gun availability.
To summarise, Responsible gun owners are less likely to accidentally shoot somebody, and hopefully their guns are less likely to be involved in a deliberate shooting by somebody else. Those that shoot irresponsibly are not more likely to die, they are more likely to shoot somebody else and that person die. Maniac drivers are openly targeted by police, more openly than gun owners, and they get their cars impounded and often confiscated. Drunk swimmers can have all the Darwin awards they desire, I've never heard of a drunk swimmer killing innocent bystanders.
Slip, handguns are legal, just very heavily restricted. You can own them for work purposes or as an enthusiast, but only a real enthusiast would jump through all the hoops required. Why do you need a handgun though, you can just get one of these. Not suitable for homes with children (or people with nightmares/sleep walkers).
http://www.youtube.com/watch?v=OEVL9DhMp3U