This is where I get my ammunition for my 71/84's. You get your choice of the origional black powder load or a smokeless load matched to the original specs (I recommend the smokeless), DO NOT confuse the Mauser 11mm (usually called Mauser 43, for 43 caliber) with the Spanish 43. There is also an Egyptian 11mm still out there, also different.
http://mashburnssafarimilitarygoods....tion40495.aspx