I called Meister Cast bullets today and inquired about 500 gr cast bullets for the 470 N.E. I was told by the lady who answered that they have the molds for the bullets, but don't produce them due to lack of interest. I told her I'd try to generate some interest.
Here's the link:
http://www.meisterbullets.com/
I'm not interseted in a new hobby of casting bullets, but would like to purchase 500 gr flat or round nose. If anyone knows of another commercial producer please let me know.