Sportsman guide has 1980s Finnish .30 ammo listed in the most recent flyer. I shoot the Lapua 9mm in my Luger, is the best I've had. Here is an info link, I've been doing business with them for years but their shipping can be expensive. The ammo is by no means cheap ($19.00)and the 9mm is berdan primed but has an excellent reputation.
http://shop.sportsmansguide.com/sear....30+luger+ammo
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rk