I am loading a 93gr LRN cast bullet .309 diameter from a Lyman mold. They are working well so far, and I am pleased. I purchase them from Western Bullet Co. in Montana. They are nice folks to deal with. He lists them as 30 Luger bullets.
I have no experience with the Lee molds/bullets, nor do I know the groove diameter of the Post War Mauser. I would slug that barrel before I loaded .311 bullets into the chamber....if they will even fit into the "new Luger chamber". My 30 Luger pistol is a 1921 Commerical Luger. I was loading the 86gr FMJ from Hornady and Sierra before I decided to try these LRN bullets. The cost is less with the lead, of course, and the performance appears to be good. Keep us informed.
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