I also use the 85gr Sierra bullet but with 6gr Unique. My Lee loading dies seem to work fine on this cartridge. It took a bit of tweaking to get the flair, crimping, and length right but I suspect that is normal for any cartridge.
I also hope Starline continues to carry brass for this and look forward to their upcoming release of 30 Luger.
<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />