I dont think there is any need to leaflet the general public to advancethe cause.
Id like to think that acceptance is gained through quiet, persistant exposure rather than proselytizing everyone we come into contact with. We have a very narrow audience in California that begins with current gunowners and ends in fence sitters. Beyond the fence is the vast array of those who oppose the 2nd amendment. It has been my experience that you cannot just hand someone a peice of information and force them to come along.
The simpler and more effective approach, is to set the example and encourage those who are interested to learn more. I would say that if you had a specific group of firearms owners to target- this may be valuable to them. But you may engender skepticism by pushing the issue among those who havent had a chance to make up their minds.