on Youtube, the gunsmith (German, I'm guessing) Waffenwerle
shows loading 6 rounds of 7.63 Mauser in a Luger mag and it works! Theres another video of him actually shooting an Artillery he converted to 7.63....I guess it would just just take running a 7.63 Mauser reamer thru a 7.65 Luger chamber....tempting idea, but seems a little scary from a safety standpoint!
http://www.youtube.com/watch?v=Ks42h...yer_detailpage