http://www.ojp.usdoj.gov/bjs/guns.htm This shows modern statistics on firearms, pretty much every graph is on the decline.

http://www.research.ryerson.ca/SAFER-Net/regions/Americas/USA_JY04.html And this shows violent crime across the baord has been dropping. That is stabbig, blunt objects firearms . . . etc all have declined from 1990-2000. Although I suspect this site is trying to pull something in that the statistics they present are different between countries, they probably had difficulty finding everything in the same format.

anyway it tells me that that we have a certain percent of people who want to commit violent crimes, and of those 63% usually decide to use a gun. It does not tell me that hand gun availablility is having an effect on gun crime at all.