This page has some good statistics, but not the exact ones that you're looking for:
http://www.guncite.com/gun_control_gcgvmurd.html
Also here's another good one: "In Florida, for example, permit holders are about 300 times less likely to perpetrate a gun crime than Floridians without permits." (
www.hoover.org/publications/policyreview/3574822.html)