I had a customer who was absolutely overjoyed the other day, because we carried 7mm Mauser ammo. Not only did we have 7mm Mauser ammo, but we had two different kinds, giving him a choice between plain ol' S&B soft points and Federal Premium stuff topped with Nosler Partition bullets. He cleaned us out of the Federal.
Lucky guy! He could be trying to scrounge ammo for a Mle. 1874 M.80 Gras. (It appears that Rocky Mountain Cartridge Company carries it, for the princely sum of $54 for 20 rounds. Yikes.)
PS: Of course we carry 7mm Mauser, silly! I have two rifles chambered for it, and I'm in charge of ordering stuff. :-)