Well after doing some further research, I've discovered that 7x66 Vom Hofe is not completely dead, but as AZ noted, it is on its last legs - at least here in the U.S. I found brass at Huntington's, which is the key as 7mm bullets are easily found. Supposedly, Walter Gehmann still manufactures factory ammunition but I'm highly skeptical that any of it finds its way into the U.S.