We have plenty of bloggers etc. who do good work assembling pro-gun statistics etc. This is important to keep well-meaning intelligent members of our “side” from becoming disheartened or actually convinced to switch sides by some slick talking activist. That being said the mass of people are swayed by emotion.
The average non gun owner truly has the impression from TV, movies, news, elementary school safety videos, etc. that guns are dangerous, unpredictable (they “just go off” sometimes!) death ray type devices, which often shoot their owners, and which are frequently used by people to commit crimes and murder, (indeed they seem only to be made for killing people or Bambi) and so a reasonable person, confronted with only this perspective, is certainly going to feel that a simple solution to this threatening bogeyman is to simply ban or heavily restrict the things, and that furthermore, only extremely well trained police and other agents of the government ought to be trusted with them -and that if a mere civilian wants to own one of these devices, he should probably be restrained from it for his own good.
The average gun owner on the other hand, rationally understands that it’s just a tool, that responsible people can use tools safely, and that the government has no right to disarm him any more than the British had to disarm the colonials. (He needs good statistics and the like to keep him from making “reasonable compromises,” forgetting sometimes that although he is reasonable, the opposition is much more motivated by something akin to religious faith and won’t accept any compromise.)