I'd postulate two things:
- 90% of the cops in TN who found you carrying a loaded black powder pistol without a permit would arrest you
- All of the courts in TN would convict you (not counting copping a lesser plea, pre-trial diversion, whatever)
Why? Because there's simply no exception in TN law for carrying a black powder firearm.
Indeed, it seems to me that a felon could be charged under TN law for mere possession of a black powder firearm, same as any other firearm, as the statute simply says "possesses a firearm, as defined in § 39-11-106" and 106 makes no mention of black powder either.
Matter of fact, the federal statute about felons and guns does not say that black powder firearms are NOT firearms, just that there is an exemption for ownership of them. But many state laws are indeed more stringent than federal ones, and of course have so far found to be binding.
- OS