A few links with pertinent info for those interested. Anyone with 1st hand knowledge feel free to jump in and describe the process as you experienced it.
https://www.tsa.gov/travel/transporting-firearms-and-ammunition
http://blog.beretta.com/10-gun-tips-you-need-to-know-about-flying-with-guns
http://www.wikihow.com/Travel-on-Airplanes-With-a-Gun
https://www.tsa.gov/travel/transporting-firearms-and-ammunition
http://blog.beretta.com/10-gun-tips-you-need-to-know-about-flying-with-guns
http://www.wikihow.com/Travel-on-Airplanes-With-a-Gun