African Rifles and Cartridges by John "Pondoro" Taylor. It is the best primer for a very bad, incurable, sickness. Parts may be slightly off color for the closing of 2005, but the stories are greatly entertaining, quite knowledgable, and the heart of it all, the cartridges and the beasts that fire them is very well told.

By the way, I don't have a double rifle yet, but I have shot doubles. Save yourself now, get out while you can! OK, you can't, welcome aboard then!