My wife and I are planning a trip to the mountains up in the TN/NC border area. We are going to fly up to Chattanooga and rent a car to explore the area. Along the way, I plan on stopping at as many LGS as I come across in the hopes of finding primers in stock at not unreasonable prices. I've checked the TSA website and it's pretty vague about primers in checked baggage. I did a search here and only found a link to an article about an incident at an airport where improperly packaged primers exploded when handled roughly. In the article there are a couple of quotes that would lead one to believe that it is permissible, but I'm not sure if it's quoting an official source or not. Bottom line, does anyone know if it is allowed, and would you please post a link to the specific TSA instructions about it.