There have been some self-defense shootings by Tennessee Handgun Permit Holders, that have resulted in criminal trials. We are not aware of any that have resulted in a criminal conviction. Criminal trials require you to have an attorney that understands the nature of self-defense, the Tennessee Handgun Permit scheme, and someone who has experience in the criminal defense arena. The odds are in your favor find this type of person.
One permit holder in Knoxville is glad he had that type of attorney to defend him. His case came about after he shot a truck driver who came after him with a 'thumper'. The incident started on a highway, and ended in a truck stop. The jury found him innocent of murder. Although expensive, he can still work to pay of the debt. His attorney was Herbert S. Moncier
Remember that it will always be a 50/50 chance in a jury trial, that you will be found innocent, or have a gang member as a cellmate.