I don't weigh my brass, I don't weigh my bullets... I only weigh my powder charge. If I get 5 loadings out of Hornady brass and my brother-in-Law (who uses the same MEC press, AMP Annealer, A&D Scale and auto trickler, but more expensive dies) 8-10 with his is Lapua and I still throw the same 1/2 inch 5 shot groups that he does. I think that the importance of one brand of brass over another is a little overblown... not unimportant, just not as important as a host of other things.

That said, I am interested in the results you get from the 300PRC. I have a 300 WSM and 300 Win Mag, so I don't really need another 30 cal Magnum... But I like to look :D