Cheers,
I "drag" two hand guns to CA and back to HI every year(fire season) and have never had a problem.
Offer to show them the guns (I take mine apart), show them the guns in the "lockable case" and the locks. I then sign the form, insert it in the case, lock the case, and then take the luggage down to the TSA x-ray station. There I ask them if they want me to lock the luggage first or let them look at it through their "magic machine" before I lock the luggage. Some places want the bag locked before they look at it, some don't.
Ammo - I don't take any with me, I buy it when I get to my destination - I buy "Glaser" ammo, which is illegal in HI - don't ask me why, I haven't figured that one out yet.
Anyway, take your guns - you'll be happier with them around! And safer.
The biggest thing to remember is that if they ask for your keys to "check the luggage" - you have to be present! NEVER give your key to the luggage or gun case to them with out you being present - it's stated in the TSA regs that you HAVE to be present for them to open your bag!
Other than that - I've found the TSA people to be ignorant, but NOT stupid. If they ask about one of my guns, I take the time to talk to them about them.
One that always gets asked about is the NAA mini .22 Mag. It fascinates these people! This trip home, the TSA agent was female and she wanted to know if they make a "garder holster" for it - d*mned if I know!
Gentle winds,
cr