This past summer I traveled the Nazi state of Kalifornia, with a checked handgun (Kahr arms K9 for mag capacity legality).
Not one of the TSA agents that I spoke with so much as raised an eyebrow when I said I needed to declare a firearm. Nor did they get "jumpy" when they asked my to open the locked case and show that they weapon was clear and not being transported while loaded.
This is the PROPER way to do things.
I'm sorry but if you own firearms and are either too mentally slow or just lack the attention span to realize that you have a loaded one IN AN AIRPORT, then I feel as though you deserve whatever you get.
I see no reason why man should not be as cruel as mother nature.