I had 46 bullets remaining, those with the least variation, and I have them loaded with 37gr of the Russian powder into neck sized cases from my Camp Perry rifle, which I know has the tightest chamber of my rifles.   The cases were from Camp Perry last year, and there's not much weight variation in them either.  Again I'm using the CCI#34 primers.  Before the temperatures drop I'll get out and use them for some position shooting from my .310" groove diameter long rifle and post the results.  I'd guesstimate velocity will be 2400-2500fps for the 173gr bullet out of the 30" barrel.